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-ext2-properties/simple_search_value-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:12:09,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:12:09,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:12:09,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:12:09,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:12:09,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:12:09,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:12:09,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:12:09,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:12:09,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:12:09,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:12:09,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:12:09,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:12:09,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:12:09,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:12:09,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:12:09,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:12:09,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:12:09,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:12:09,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:12:09,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:12:09,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:12:09,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:12:09,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:12:09,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:12:09,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:12:09,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:12:09,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:12:09,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:12:09,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:12:09,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:12:09,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:12:09,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:12:09,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:12:09,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:12:09,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:12:09,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:12:09,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:12:09,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:12:09,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:12:09,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:12:09,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 13:12:09,377 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:12:09,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:12:09,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:12:09,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:12:09,379 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:12:09,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:12:09,380 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:12:09,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:12:09,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:12:09,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:12:09,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:12:09,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:12:09,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:12:09,382 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:12:09,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:12:09,383 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:12:09,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:12:09,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:12:09,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:12:09,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:12:09,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:12:09,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:12:09,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:12:09,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:12:09,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:12:09,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:12:09,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:12:09,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:12:09,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:12:09,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:12:09,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:12:09,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:12:09,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:12:09,698 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:12:09,699 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_search_value-2.i [2019-10-07 13:12:09,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109fcf7da/45d534d65a2d477d81d0781c894c3ba5/FLAG4bce1c978 [2019-10-07 13:12:10,274 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:12:10,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_search_value-2.i [2019-10-07 13:12:10,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109fcf7da/45d534d65a2d477d81d0781c894c3ba5/FLAG4bce1c978 [2019-10-07 13:12:10,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/109fcf7da/45d534d65a2d477d81d0781c894c3ba5 [2019-10-07 13:12:10,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:12:10,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:12:10,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:12:10,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:12:10,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:12:10,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:12:10" (1/1) ... [2019-10-07 13:12:10,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c91f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:10, skipping insertion in model container [2019-10-07 13:12:10,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:12:10" (1/1) ... [2019-10-07 13:12:10,622 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:12:10,685 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:12:11,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:12:11,148 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:12:11,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:12:11,278 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:12:11,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11 WrapperNode [2019-10-07 13:12:11,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:12:11,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:12:11,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:12:11,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:12:11,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... [2019-10-07 13:12:11,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:12:11,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:12:11,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:12:11,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:12:11,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:12:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:12:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:12:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:12:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:12:11,413 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:12:11,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:12:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:12:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:12:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:12:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:12:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:12:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:12:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:12:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:12:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:12:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:12:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:12:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:12:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:12:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:12:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:12:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:12:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:12:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:12:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:12:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:12:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:12:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:12:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:12:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:12:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:12:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:12:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:12:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:12:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:12:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:12:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:12:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:12:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:12:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:12:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:12:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:12:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:12:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:12:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:12:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:12:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:12:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:12:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:12:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:12:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:12:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:12:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 13:12:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:12:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:12:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:12:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:12:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:12:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:12:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:12:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:12:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:12:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:12:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:12:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:12:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:12:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:12:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:12:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:12:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:12:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:12:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:12:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:12:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:12:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:12:11,802 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:12:12,054 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:12:12,054 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-07 13:12:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:12:12 BoogieIcfgContainer [2019-10-07 13:12:12,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:12:12,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:12:12,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:12:12,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:12:12,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:12:10" (1/3) ... [2019-10-07 13:12:12,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7c2cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:12:12, skipping insertion in model container [2019-10-07 13:12:12,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:12:11" (2/3) ... [2019-10-07 13:12:12,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7c2cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:12:12, skipping insertion in model container [2019-10-07 13:12:12,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:12:12" (3/3) ... [2019-10-07 13:12:12,063 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_search_value-2.i [2019-10-07 13:12:12,073 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:12:12,079 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:12:12,089 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:12:12,107 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:12:12,108 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:12:12,108 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:12:12,108 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:12:12,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:12:12,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:12:12,109 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:12:12,109 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:12:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-07 13:12:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 13:12:12,129 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:12:12,130 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:12:12,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:12:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:12:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1748319836, now seen corresponding path program 1 times [2019-10-07 13:12:12,142 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:12:12,143 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,143 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,143 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:12:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:12:12,296 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,297 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:12:12,297 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:12:12,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:12:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:12:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:12:12,318 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-07 13:12:12,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:12:12,345 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-10-07 13:12:12,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:12:12,346 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-07 13:12:12,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:12:12,356 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:12:12,356 INFO L226 Difference]: Without dead ends: 16 [2019-10-07 13:12:12,361 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:12:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-07 13:12:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-07 13:12:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-07 13:12:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-07 13:12:12,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2019-10-07 13:12:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:12:12,399 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-07 13:12:12,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:12:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-07 13:12:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-07 13:12:12,400 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:12:12,400 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:12:12,401 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:12:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:12:12,401 INFO L82 PathProgramCache]: Analyzing trace with hash -926616102, now seen corresponding path program 1 times [2019-10-07 13:12:12,402 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:12:12,402 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,402 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,402 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:12:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:12:12,498 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,498 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:12:12,499 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:12:12,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:12:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:12:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:12:12,502 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2019-10-07 13:12:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:12:12,546 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-07 13:12:12,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:12:12,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-07 13:12:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:12:12,548 INFO L225 Difference]: With dead ends: 25 [2019-10-07 13:12:12,548 INFO L226 Difference]: Without dead ends: 22 [2019-10-07 13:12:12,549 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:12:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-07 13:12:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2019-10-07 13:12:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-07 13:12:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-07 13:12:12,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-10-07 13:12:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:12:12,555 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-07 13:12:12,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:12:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-07 13:12:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:12:12,556 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:12:12,574 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:12:12,575 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:12:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:12:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1339791088, now seen corresponding path program 1 times [2019-10-07 13:12:12,576 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:12:12,576 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,576 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,576 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:12:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:12,678 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,679 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:12:12,679 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:12:12,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:12:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:12:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:12:12,680 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-10-07 13:12:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:12:12,709 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-07 13:12:12,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:12:12,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-07 13:12:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:12:12,711 INFO L225 Difference]: With dead ends: 27 [2019-10-07 13:12:12,711 INFO L226 Difference]: Without dead ends: 21 [2019-10-07 13:12:12,712 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:12:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-07 13:12:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-10-07 13:12:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-07 13:12:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-07 13:12:12,716 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-10-07 13:12:12,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:12:12,717 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-07 13:12:12,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:12:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-07 13:12:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 13:12:12,718 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:12:12,718 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:12:12,718 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:12:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:12:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash -124297803, now seen corresponding path program 1 times [2019-10-07 13:12:12,719 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:12:12,719 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,719 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:12:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:12,825 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:12,826 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:12:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:12:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:12,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:12:12,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:12:13,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:12:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:13,019 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:12:13,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:12:13,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:12:13,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:12:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:13,063 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:12:13,087 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 13:12:13,088 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:12:13,093 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:12:13,101 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:12:13,102 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:12:13,291 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:12:13,767 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:12:14,302 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:12:14,308 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:12:14,309 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:12:14,309 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 143#(and (= 0 |main_#t~malloc5.offset|) (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|) (<= |main_#t~malloc5.offset| 0)) [2019-10-07 13:12:14,310 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 152#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:12:14,314 INFO L193 IcfgInterpreter]: Reachable states at location L538-3 satisfy 43#(and (<= |main_#t~malloc2.offset| 0) (or (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= main_~a~0.offset 0)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= 0 main_~a~0.base)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:12:14,314 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 88#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-07 13:12:14,314 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-07 13:12:14,314 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 138#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base)))) [2019-10-07 13:12:14,315 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:12:14,315 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:12:14,315 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:12:14,315 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-07 13:12:14,315 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 157#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:12:14,316 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:12:14,316 INFO L193 IcfgInterpreter]: Reachable states at location L555-3 satisfy 128#(and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (= 0 main_~p~0.base) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (= main_~p~0.offset 0)) [2019-10-07 13:12:14,317 INFO L193 IcfgInterpreter]: Reachable states at location L545-3 satisfy 148#(and (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (or (and (= 0 |main_#t~malloc5.offset|) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (not (= main_~t~0.base 0)) (< |#StackHeapBarrier| |main_#t~malloc5.base|)) (and (= 0 |main_#t~malloc5.offset|) (not (= main_~t~0.offset 0)) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|))) (<= |main_#t~malloc5.offset| 0)) [2019-10-07 13:12:14,317 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 123#true [2019-10-07 13:12:14,317 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 133#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base)))) [2019-10-07 13:12:14,813 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:12:14,814 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 10] total 17 [2019-10-07 13:12:14,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-07 13:12:14,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-07 13:12:14,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:12:14,816 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2019-10-07 13:12:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:12:15,750 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-07 13:12:15,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-07 13:12:15,751 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2019-10-07 13:12:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:12:15,752 INFO L225 Difference]: With dead ends: 39 [2019-10-07 13:12:15,752 INFO L226 Difference]: Without dead ends: 33 [2019-10-07 13:12:15,753 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2019-10-07 13:12:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-07 13:12:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-07 13:12:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-07 13:12:15,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-10-07 13:12:15,763 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 18 [2019-10-07 13:12:15,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:12:15,763 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-10-07 13:12:15,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-07 13:12:15,763 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-10-07 13:12:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-07 13:12:15,765 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:12:15,765 INFO L385 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:12:15,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:12:15,973 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:12:15,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:12:15,973 INFO L82 PathProgramCache]: Analyzing trace with hash -886164732, now seen corresponding path program 2 times [2019-10-07 13:12:15,974 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:12:15,974 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:15,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:15,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:12:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:16,096 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:16,096 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:12:16,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:12:16,330 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-07 13:12:16,331 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:12:16,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 13:12:16,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:12:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:16,351 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:12:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:12:16,432 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:12:16,434 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 13:12:16,434 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:12:16,434 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:12:16,435 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:12:16,435 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:12:16,475 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:12:16,797 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:12:17,116 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:12:17,121 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:12:17,122 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:12:17,122 INFO L193 IcfgInterpreter]: Reachable states at location L545 satisfy 143#(and (= 0 |main_#t~malloc5.offset|) (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|) (<= |main_#t~malloc5.offset| 0)) [2019-10-07 13:12:17,123 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 152#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-07 13:12:17,123 INFO L193 IcfgInterpreter]: Reachable states at location L538-3 satisfy 43#(and (<= |main_#t~malloc2.offset| 0) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (or (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.base|) (not (= main_~a~0.offset 0)) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (= 0 |main_#t~malloc2.offset|) (not (= 0 main_~a~0.base)) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:12:17,123 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 88#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-07 13:12:17,124 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 138#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base)))) [2019-10-07 13:12:17,124 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-07 13:12:17,124 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:12:17,124 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:12:17,124 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:12:17,125 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-07 13:12:17,125 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 157#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:12:17,125 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:12:17,125 INFO L193 IcfgInterpreter]: Reachable states at location L555-3 satisfy 128#(and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (= 0 main_~p~0.base) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (= main_~p~0.offset 0)) [2019-10-07 13:12:17,125 INFO L193 IcfgInterpreter]: Reachable states at location L545-3 satisfy 148#(and (<= main_~t~0.offset 0) (<= 0 |main_#t~malloc5.offset|) (<= 0 main_~t~0.offset) (or (and (= 0 |main_#t~malloc5.offset|) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (not (= main_~t~0.base 0)) (< |#StackHeapBarrier| |main_#t~malloc5.base|)) (and (= 0 |main_#t~malloc5.offset|) (not (= main_~t~0.offset 0)) (= main_~counter~0 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) (= main_~t~0.offset |main_#t~malloc5.offset|) (not (= |main_#t~malloc5.base| 0)) (= (select |#length| |main_#t~malloc5.base|) 8) (= |main_#t~malloc5.base| main_~t~0.base) (= 1 (select |#valid| |main_#t~malloc5.base|)) (< |#StackHeapBarrier| |main_#t~malloc5.base|))) (<= |main_#t~malloc5.offset| 0)) [2019-10-07 13:12:17,126 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 123#true [2019-10-07 13:12:17,126 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 133#(and (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)) (and (= 0 main_~hasTwelve~0) (= 0 main_~p~0.base) (= main_~p~0.offset 0))) (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= main_~hasTwelve~0 0) (<= 0 main_~hasTwelve~0)) (and (<= main_~p~0.base 0) (<= 0 main_~hasTwo~0) (<= 0 main_~p~0.offset) (<= main_~hasTwo~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base)))) [2019-10-07 13:12:17,630 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:12:17,631 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 10] total 23 [2019-10-07 13:12:17,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 13:12:17,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 13:12:17,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2019-10-07 13:12:17,632 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 23 states. [2019-10-07 13:12:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:12:19,491 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2019-10-07 13:12:19,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-10-07 13:12:19,491 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2019-10-07 13:12:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:12:19,493 INFO L225 Difference]: With dead ends: 63 [2019-10-07 13:12:19,493 INFO L226 Difference]: Without dead ends: 57 [2019-10-07 13:12:19,496 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2019-10-07 13:12:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-07 13:12:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-10-07 13:12:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-07 13:12:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2019-10-07 13:12:19,503 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 30 [2019-10-07 13:12:19,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:12:19,504 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2019-10-07 13:12:19,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 13:12:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2019-10-07 13:12:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-07 13:12:19,506 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:12:19,506 INFO L385 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:12:19,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:12:19,709 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:12:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:12:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash -148102622, now seen corresponding path program 3 times [2019-10-07 13:12:19,711 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:12:19,711 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:19,711 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:19,711 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:12:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:12:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:12:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2019-10-07 13:12:20,372 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:12:20,373 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:12:20,373 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:12:21,061 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:12:21,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:12:21,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 114 conjunts are in the unsatisfiable core [2019-10-07 13:12:21,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:12:22,110 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-10-07 13:12:22,373 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-10-07 13:12:22,489 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-10-07 13:12:22,658 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2019-10-07 13:12:23,037 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2019-10-07 13:12:23,223 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-10-07 13:12:23,537 WARN L191 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-10-07 13:12:23,839 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2019-10-07 13:12:24,036 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2019-10-07 13:12:24,318 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-10-07 13:12:24,988 WARN L191 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2019-10-07 13:12:25,286 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-10-07 13:12:25,642 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-10-07 13:12:26,019 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 120 [2019-10-07 13:12:26,360 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 97 [2019-10-07 13:12:26,741 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-10-07 13:12:27,840 WARN L191 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 96 [2019-10-07 13:12:28,122 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-07 13:12:28,676 WARN L191 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 117 [2019-10-07 13:12:29,307 WARN L191 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 161 [2019-10-07 13:12:29,898 WARN L191 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 115 [2019-10-07 13:12:30,416 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-07 13:12:31,495 WARN L191 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 115 [2019-10-07 13:12:31,855 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-07 13:12:32,689 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 139 [2019-10-07 13:12:33,586 WARN L191 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 208 [2019-10-07 13:12:34,414 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 133 [2019-10-07 13:12:35,173 WARN L191 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2019-10-07 13:12:37,970 WARN L191 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 237 DAG size of output: 138 [2019-10-07 13:12:38,410 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-07 13:12:39,611 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 181 DAG size of output: 163 [2019-10-07 13:12:40,858 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 295 DAG size of output: 261 [2019-10-07 13:12:42,109 WARN L191 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 248 DAG size of output: 157 [2019-10-07 13:12:43,086 WARN L191 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2019-10-07 13:12:45,981 WARN L191 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 283 DAG size of output: 162 [2019-10-07 13:12:46,774 WARN L191 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2019-10-07 13:12:48,531 WARN L191 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 358 DAG size of output: 320 [2019-10-07 13:12:50,032 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 271 DAG size of output: 159 [2019-10-07 13:12:51,300 WARN L191 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 358 [2019-10-07 13:13:08,899 WARN L191 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 316 DAG size of output: 163 [2019-10-07 13:13:09,628 WARN L191 SmtUtils]: Spent 539.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-07 13:13:13,092 WARN L191 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 484 DAG size of output: 449