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/dll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:59:35,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:59:35,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:59:35,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:59:35,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:59:35,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:59:35,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:59:35,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:59:35,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:59:35,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:59:35,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:59:35,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:59:35,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:59:35,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:59:35,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:59:35,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:59:35,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:59:35,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:59:35,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:59:35,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:59:35,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:59:35,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:59:35,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:59:35,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:59:35,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:59:35,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:59:35,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:59:35,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:59:35,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:59:35,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:59:35,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:59:35,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:59:35,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:59:35,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:59:35,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:59:35,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:59:35,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:59:35,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:59:35,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:59:35,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:59:35,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:59:35,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:59:35,273 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:59:35,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:59:35,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:59:35,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:59:35,275 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:59:35,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:59:35,275 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:59:35,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:59:35,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:59:35,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:59:35,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:59:35,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:59:35,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:59:35,276 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:59:35,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:59:35,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:59:35,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:59:35,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:59:35,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:59:35,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:59:35,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:59:35,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:35,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:59:35,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:59:35,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:59:35,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:59:35,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:59:35,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:59:35,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:59:35,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:59:35,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:59:35,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:59:35,646 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:59:35,646 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:59:35,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-10-15 02:59:35,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b245c6943/8fc31e370b2e4668ba8052e88099a1aa/FLAG923442db4 [2019-10-15 02:59:36,372 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:59:36,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_prepend_unequal.i [2019-10-15 02:59:36,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b245c6943/8fc31e370b2e4668ba8052e88099a1aa/FLAG923442db4 [2019-10-15 02:59:36,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b245c6943/8fc31e370b2e4668ba8052e88099a1aa [2019-10-15 02:59:36,684 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:59:36,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:59:36,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:36,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:59:36,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:59:36,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:36" (1/1) ... [2019-10-15 02:59:36,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a425a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:36, skipping insertion in model container [2019-10-15 02:59:36,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:36" (1/1) ... [2019-10-15 02:59:36,705 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:59:36,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:59:37,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:37,237 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:59:37,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:37,378 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:59:37,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37 WrapperNode [2019-10-15 02:59:37,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:37,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:59:37,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:59:37,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:59:37,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... [2019-10-15 02:59:37,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:59:37,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:59:37,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:59:37,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:59:37,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:59:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:59:37,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:59:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:59:37,506 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:59:37,509 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 02:59:37,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-15 02:59:37,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-10-15 02:59:37,510 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_prepend [2019-10-15 02:59:37,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:59:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:59:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:59:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:59:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:59:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:59:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:59:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:59:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:59:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:59:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:59:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:59:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:59:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:59:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:59:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:59:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:59:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:59:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:59:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:59:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:59:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:59:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:59:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:59:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:59:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:59:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:59:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:59:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:59:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:59:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:59:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:59:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:59:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:59:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:59:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:59:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:59:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:59:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:59:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:59:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:59:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:59:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:59:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:59:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:59:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:59:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:59:37,526 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:59:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:59:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:59:37,527 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:59:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:59:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:59:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:59:37,528 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:59:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:59:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:59:37,529 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:59:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:59:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:59:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:59:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:59:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:59:37,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:59:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:59:37,531 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:59:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:59:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:59:37,532 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:59:37,533 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:59:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:59:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:59:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:59:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:59:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:59:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:59:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:59:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:59:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:59:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:59:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:59:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:59:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:59:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:59:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:59:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:59:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:59:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:59:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:59:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:59:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:59:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:59:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:59:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:59:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:59:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:59:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 02:59:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:59:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:59:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:59:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-15 02:59:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-10-15 02:59:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure dll_prepend [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:59:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:59:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:59:37,998 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:59:38,319 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:59:38,320 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 02:59:38,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:38 BoogieIcfgContainer [2019-10-15 02:59:38,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:59:38,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:59:38,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:59:38,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:59:38,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:59:36" (1/3) ... [2019-10-15 02:59:38,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527ae4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:38, skipping insertion in model container [2019-10-15 02:59:38,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:37" (2/3) ... [2019-10-15 02:59:38,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527ae4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:38, skipping insertion in model container [2019-10-15 02:59:38,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:38" (3/3) ... [2019-10-15 02:59:38,330 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2019-10-15 02:59:38,341 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:59:38,349 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:59:38,359 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:59:38,384 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:59:38,385 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:59:38,385 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:59:38,385 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:59:38,385 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:59:38,385 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:59:38,386 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:59:38,386 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:59:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-10-15 02:59:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-15 02:59:38,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:38,414 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] [2019-10-15 02:59:38,416 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:38,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1207934179, now seen corresponding path program 1 times [2019-10-15 02:59:38,432 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:38,433 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782612822] [2019-10-15 02:59:38,433 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:38,433 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:38,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:38,737 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 02:59:38,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782612822] [2019-10-15 02:59:38,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:59:38,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:59:38,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037067611] [2019-10-15 02:59:38,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:59:38,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:38,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:59:38,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:59:38,768 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 5 states. [2019-10-15 02:59:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:38,884 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2019-10-15 02:59:38,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:59:38,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-15 02:59:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:38,896 INFO L225 Difference]: With dead ends: 75 [2019-10-15 02:59:38,896 INFO L226 Difference]: Without dead ends: 31 [2019-10-15 02:59:38,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:59:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-15 02:59:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-10-15 02:59:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 02:59:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-15 02:59:38,943 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2019-10-15 02:59:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:38,944 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-15 02:59:38,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:59:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-15 02:59:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 02:59:38,945 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:38,945 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 02:59:38,946 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1776476923, now seen corresponding path program 1 times [2019-10-15 02:59:38,947 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:38,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658648803] [2019-10-15 02:59:38,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:38,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:38,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:39,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658648803] [2019-10-15 02:59:39,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966748955] [2019-10-15 02:59:39,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:39,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:59:39,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:39,369 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:39,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1693484731] [2019-10-15 02:59:39,554 INFO L162 IcfgInterpreter]: Started Sifa with 25 locations of interest [2019-10-15 02:59:39,555 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:39,565 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:39,574 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:39,574 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:39,729 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:59:39,922 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:40,312 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:40,648 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:41,140 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:41,230 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:41,241 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:41,257 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:42,083 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:44,232 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2019-10-15 02:59:45,430 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2019-10-15 02:59:46,066 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-10-15 02:59:46,529 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2019-10-15 02:59:48,361 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-10-15 02:59:48,808 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-10-15 02:59:49,454 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-10-15 02:59:49,771 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-10-15 02:59:50,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:50,034 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:146) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:275) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:263) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:237) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:216) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 02:59:50,039 INFO L168 Benchmark]: Toolchain (without parser) took 13353.77 ms. Allocated memory was 136.3 MB in the beginning and 309.3 MB in the end (delta: 173.0 MB). Free memory was 99.1 MB in the beginning and 114.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 193.3 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:50,043 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-15 02:59:50,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.22 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 98.7 MB in the beginning and 161.2 MB in the end (delta: -62.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:50,047 INFO L168 Benchmark]: Boogie Preprocessor took 67.36 ms. Allocated memory is still 198.7 MB. Free memory was 161.2 MB in the beginning and 158.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:50,048 INFO L168 Benchmark]: RCFGBuilder took 873.46 ms. Allocated memory is still 198.7 MB. Free memory was 158.1 MB in the beginning and 95.4 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:50,049 INFO L168 Benchmark]: TraceAbstraction took 11715.19 ms. Allocated memory was 198.7 MB in the beginning and 309.3 MB in the end (delta: 110.6 MB). Free memory was 94.8 MB in the beginning and 114.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 126.6 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:50,051 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.22 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 98.7 MB in the beginning and 161.2 MB in the end (delta: -62.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.36 ms. Allocated memory is still 198.7 MB. Free memory was 161.2 MB in the beginning and 158.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 873.46 ms. Allocated memory is still 198.7 MB. Free memory was 158.1 MB in the beginning and 95.4 MB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11715.19 ms. Allocated memory was 198.7 MB in the beginning and 309.3 MB in the end (delta: 110.6 MB). Free memory was 94.8 MB in the beginning and 114.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 126.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...