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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:10:53,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:10:53,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:10:53,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:10:53,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:10:53,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:10:53,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:10:53,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:10:53,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:10:53,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:10:53,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:10:53,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:10:53,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:10:53,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:10:53,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:10:53,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:10:53,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:10:53,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:10:53,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:10:53,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:10:53,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:10:53,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:10:53,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:10:53,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:10:53,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:10:53,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:10:53,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:10:53,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:10:53,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:10:53,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:10:53,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:10:53,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:10:53,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:10:53,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:10:53,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:10:53,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:10:53,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:10:53,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:10:53,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:10:53,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:10:53,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:10:53,204 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 13:10:53,241 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:10:53,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:10:53,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:10:53,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:10:53,246 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:10:53,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:10:53,247 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:10:53,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:10:53,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:10:53,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:10:53,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:10:53,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:10:53,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:10:53,250 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:10:53,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:10:53,251 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:10:53,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:10:53,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:10:53,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:10:53,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:10:53,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:10:53,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:10:53,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:10:53,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:10:53,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:10:53,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:10:53,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:10:53,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:10:53,254 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 13:10:53,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:10:53,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:10:53,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:10:53,574 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:10:53,575 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:10:53,575 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_search_value-1.i [2019-10-07 13:10:53,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e3032bf/ec67f703dbe042b5be3625c2a2aeb7da/FLAG9fa972c14 [2019-10-07 13:10:54,200 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:10:54,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_search_value-1.i [2019-10-07 13:10:54,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e3032bf/ec67f703dbe042b5be3625c2a2aeb7da/FLAG9fa972c14 [2019-10-07 13:10:54,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e3032bf/ec67f703dbe042b5be3625c2a2aeb7da [2019-10-07 13:10:54,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:10:54,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:10:54,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:10:54,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:10:54,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:10:54,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:10:54" (1/1) ... [2019-10-07 13:10:54,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa9aec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:54, skipping insertion in model container [2019-10-07 13:10:54,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:10:54" (1/1) ... [2019-10-07 13:10:54,498 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:10:54,546 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:10:54,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:10:55,011 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:10:55,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:10:55,118 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:10:55,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55 WrapperNode [2019-10-07 13:10:55,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:10:55,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:10:55,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:10:55,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:10:55,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (1/1) ... [2019-10-07 13:10:55,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:10:55,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:10:55,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:10:55,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:10:55,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (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 13:10:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:10:55,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:10:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:10:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:10:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:10:55,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:10:55,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:10:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:10:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:10:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:10:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:10:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:10:55,251 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:10:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:10:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:10:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:10:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:10:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:10:55,252 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:10:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:10:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:10:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:10:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:10:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:10:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:10:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:10:55,255 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:10:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:10:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:10:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:10:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:10:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:10:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:10:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:10:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:10:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:10:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:10:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:10:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:10:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:10:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:10:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:10:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:10:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:10:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:10:55,259 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:10:55,260 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:10:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:10:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:10:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:10:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:10:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:10:55,261 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:10:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:10:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:10:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:10:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:10:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:10:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:10:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:10:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:10:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:10:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:10:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:10:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:10:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:10:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:10:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:10:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:10:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:10:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:10:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:10:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:10:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:10:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:10:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:10:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:10:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:10:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:10:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:10:55,655 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:10:55,929 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:10:55,929 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-07 13:10:55,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:10:55 BoogieIcfgContainer [2019-10-07 13:10:55,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:10:55,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:10:55,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:10:55,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:10:55,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:10:54" (1/3) ... [2019-10-07 13:10:55,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66882921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:10:55, skipping insertion in model container [2019-10-07 13:10:55,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:10:55" (2/3) ... [2019-10-07 13:10:55,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66882921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:10:55, skipping insertion in model container [2019-10-07 13:10:55,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:10:55" (3/3) ... [2019-10-07 13:10:55,940 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_search_value-1.i [2019-10-07 13:10:55,949 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:10:55,958 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:10:55,971 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:10:55,997 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:10:55,997 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:10:55,997 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:10:55,998 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:10:55,998 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:10:55,998 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:10:55,998 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:10:55,999 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:10:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-07 13:10:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 13:10:56,022 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:56,023 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:56,025 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:56,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:56,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1748319836, now seen corresponding path program 1 times [2019-10-07 13:10:56,041 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:56,041 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,042 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,042 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:56,185 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 13:10:56,185 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,186 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:10:56,186 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:10:56,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:10:56,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:10:56,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:10:56,207 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-07 13:10:56,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:56,228 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-10-07 13:10:56,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:10:56,230 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-07 13:10:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:56,237 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:10:56,237 INFO L226 Difference]: Without dead ends: 16 [2019-10-07 13:10:56,240 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 13:10:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-07 13:10:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-07 13:10:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-07 13:10:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-07 13:10:56,280 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2019-10-07 13:10:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:56,281 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-07 13:10:56,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:10:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-07 13:10:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-07 13:10:56,282 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:56,282 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:56,282 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -926616102, now seen corresponding path program 1 times [2019-10-07 13:10:56,283 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:56,284 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,284 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,284 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:56,384 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 13:10:56,384 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,384 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:10:56,385 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:10:56,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:10:56,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:10:56,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:10:56,387 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2019-10-07 13:10:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:56,452 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-07 13:10:56,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:10:56,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-07 13:10:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:56,454 INFO L225 Difference]: With dead ends: 25 [2019-10-07 13:10:56,455 INFO L226 Difference]: Without dead ends: 22 [2019-10-07 13:10:56,490 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 13:10:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-07 13:10:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2019-10-07 13:10:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-07 13:10:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-07 13:10:56,497 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-10-07 13:10:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:56,498 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-07 13:10:56,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:10:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-07 13:10:56,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 13:10:56,499 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:56,499 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:10:56,499 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:56,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1339791088, now seen corresponding path program 1 times [2019-10-07 13:10:56,500 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:56,500 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,501 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,501 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:56,594 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 13:10:56,594 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,595 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:10:56,595 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:10:56,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:10:56,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:10:56,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:10:56,599 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-10-07 13:10:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:56,643 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-07 13:10:56,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:10:56,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-07 13:10:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:56,645 INFO L225 Difference]: With dead ends: 27 [2019-10-07 13:10:56,645 INFO L226 Difference]: Without dead ends: 21 [2019-10-07 13:10:56,646 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 13:10:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-07 13:10:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-10-07 13:10:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-07 13:10:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-07 13:10:56,656 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-10-07 13:10:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:56,656 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-07 13:10:56,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:10:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-07 13:10:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-07 13:10:56,658 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:56,661 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 13:10:56,662 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:10:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:10:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash -124297803, now seen corresponding path program 1 times [2019-10-07 13:10:56,664 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:10:56,664 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,664 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,665 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:10:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:10:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:56,802 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 13:10:56,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:10:56,804 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:10:56,804 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 13:10:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:10:56,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:10:56,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:10:57,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:10:57,023 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 13:10:57,024 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:10:57,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:10:57,039 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:10:57,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:10:57,082 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 13:10:57,083 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:10:57,120 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 13:10:57,120 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:10:57,126 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:10:57,133 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:10:57,133 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:10:57,324 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:10:57,886 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:10:58,322 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:10:58,330 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:10:58,330 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:10:58,330 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 13:10:58,331 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 13:10:58,331 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$.offset)|))) (<= main_~a~0.offset 0) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:10:58,331 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 88#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-07 13:10:58,332 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-07 13:10:58,332 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:10:58,332 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:10:58,332 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$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 13:10:58,333 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-07 13:10:58,333 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 13:10:58,333 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:10:58,333 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 138#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~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))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-07 13:10:58,334 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 13:10:58,334 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 13:10:58,334 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 123#true [2019-10-07 13:10:58,334 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 133#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~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))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-07 13:10:58,701 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2019-10-07 13:10:58,931 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:10:58,931 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 10] total 17 [2019-10-07 13:10:58,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-07 13:10:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-07 13:10:58,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-10-07 13:10:58,937 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 17 states. [2019-10-07 13:10:59,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:10:59,947 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-07 13:10:59,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-07 13:10:59,948 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2019-10-07 13:10:59,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:10:59,949 INFO L225 Difference]: With dead ends: 39 [2019-10-07 13:10:59,949 INFO L226 Difference]: Without dead ends: 33 [2019-10-07 13:10:59,951 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2019-10-07 13:10:59,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-07 13:10:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-07 13:10:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-07 13:10:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-10-07 13:10:59,957 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 18 [2019-10-07 13:10:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:10:59,957 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-10-07 13:10:59,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-07 13:10:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-10-07 13:10:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-07 13:10:59,958 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:10:59,959 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 13:11:00,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:11:00,165 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:11:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:11:00,166 INFO L82 PathProgramCache]: Analyzing trace with hash -886164732, now seen corresponding path program 2 times [2019-10-07 13:11:00,166 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:11:00,166 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:11:00,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:11:00,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:11:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:11:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:11:00,306 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 13:11:00,307 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:11:00,307 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:11:00,307 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 13:11:00,511 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-07 13:11:00,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:11:00,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 13:11:00,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:11:00,528 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 13:11:00,528 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:11:00,616 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 13:11:00,616 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:11:00,618 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 13:11:00,619 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:11:00,619 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:11:00,619 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:11:00,620 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:11:00,658 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:11:01,011 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:11:01,345 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-07 13:11:01,349 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:11:01,350 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:11:01,350 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 13:11:01,350 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 13:11:01,350 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$.offset)|))) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:11:01,351 INFO L193 IcfgInterpreter]: Reachable states at location L542-6 satisfy 88#(and (not (< main_~counter~0 10)) (<= 10 main_~counter~0)) [2019-10-07 13:11:01,351 INFO L193 IcfgInterpreter]: Reachable states at location L542-5 satisfy 75#true [2019-10-07 13:11:01,351 INFO L193 IcfgInterpreter]: Reachable states at location L538 satisfy 38#(and (= (store |old(#length)| |main_#t~malloc2.base| 8) |#length|) (<= |main_#t~malloc2.offset| 0) (= 0 |#NULL.base|) (not (= |main_#t~malloc2.base| 0)) (<= |#NULL.base| 0) (<= main_~a~0.offset 0) (= 0 |main_#t~malloc2.offset|) (<= 0 main_~a~0.offset) (<= 0 |#NULL.base|) (= |#valid| (store |old(#valid)| |main_#t~malloc2.base| 1)) (<= 0 |main_#t~malloc2.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0)) (= main_~a~0.offset |main_#t~malloc2.offset|) (= (select |old(#valid)| |main_#t~malloc2.base|) 0) (= |main_#t~malloc2.base| main_~a~0.base) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (< |#StackHeapBarrier| |main_#t~malloc2.base|) (= |#NULL.offset| 0) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2019-10-07 13:11:01,351 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-07 13:11:01,352 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$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 13:11:01,352 INFO L193 IcfgInterpreter]: Reachable states at location L542-3 satisfy 83#true [2019-10-07 13:11:01,355 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 13:11:01,355 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:11:01,362 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 138#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~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))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-07 13:11:01,362 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 13:11:01,363 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 13:11:01,363 INFO L193 IcfgInterpreter]: Reachable states at location L555-2 satisfy 123#true [2019-10-07 13:11:01,363 INFO L193 IcfgInterpreter]: Reachable states at location L565 satisfy 133#(and (or (and (<= main_~p~0.base 0) (<= 0 main_~p~0.offset) (<= main_~hasSix~0 0) (<= main_~p~0.offset 0) (<= 0 main_~p~0.base) (<= 0 main_~hasSix~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))) (or (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasSix~0)) (and (= 0 main_~p~0.base) (= main_~p~0.offset 0) (= 0 main_~hasTwo~0)))) [2019-10-07 13:11:01,870 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:11:01,871 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 10] total 23 [2019-10-07 13:11:01,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 13:11:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 13:11:01,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2019-10-07 13:11:01,873 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 23 states. [2019-10-07 13:11:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:11:03,948 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2019-10-07 13:11:03,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-10-07 13:11:03,949 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 30 [2019-10-07 13:11:03,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:11:03,951 INFO L225 Difference]: With dead ends: 63 [2019-10-07 13:11:03,951 INFO L226 Difference]: Without dead ends: 57 [2019-10-07 13:11:03,953 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2019-10-07 13:11:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-07 13:11:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2019-10-07 13:11:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-07 13:11:03,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2019-10-07 13:11:03,962 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 30 [2019-10-07 13:11:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:11:03,962 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2019-10-07 13:11:03,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 13:11:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2019-10-07 13:11:03,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-07 13:11:03,965 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:11:03,965 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 13:11:04,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:11:04,166 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:11:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:11:04,167 INFO L82 PathProgramCache]: Analyzing trace with hash -148102622, now seen corresponding path program 3 times [2019-10-07 13:11:04,167 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:11:04,167 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:11:04,167 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:11:04,168 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:11:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:11:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:11:04,907 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 13:11:04,908 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:11:04,908 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:11:04,908 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 13:11:05,250 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-07 13:11:05,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:11:05,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 116 conjunts are in the unsatisfiable core [2019-10-07 13:11:05,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:11:05,991 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-10-07 13:11:06,366 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-10-07 13:11:06,678 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-10-07 13:11:06,815 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-10-07 13:11:06,962 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2019-10-07 13:11:07,149 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-10-07 13:11:07,409 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-10-07 13:11:07,610 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2019-10-07 13:11:07,848 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-10-07 13:11:08,109 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2019-10-07 13:11:08,336 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2019-10-07 13:11:08,617 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-10-07 13:11:09,157 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2019-10-07 13:11:09,403 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-10-07 13:11:09,905 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2019-10-07 13:11:10,333 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2019-10-07 13:11:10,672 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2019-10-07 13:11:11,162 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2019-10-07 13:11:12,155 WARN L191 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 95 [2019-10-07 13:11:12,509 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-10-07 13:11:13,072 WARN L191 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 116 [2019-10-07 13:11:13,698 WARN L191 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 159 [2019-10-07 13:11:14,267 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 112 [2019-10-07 13:11:14,833 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2019-10-07 13:11:16,259 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 185 DAG size of output: 114 [2019-10-07 13:11:16,610 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-10-07 13:11:17,446 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 138 [2019-10-07 13:11:18,319 WARN L191 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 206 [2019-10-07 13:11:19,501 WARN L191 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 137 [2019-10-07 13:11:20,251 WARN L191 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-07 13:11:22,599 WARN L191 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 233 DAG size of output: 137 [2019-10-07 13:11:23,114 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-10-07 13:11:24,308 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 180 DAG size of output: 162 [2019-10-07 13:11:25,700 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 293 DAG size of output: 259 [2019-10-07 13:11:27,671 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 453 DAG size of output: 163 [2019-10-07 13:11:28,697 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2019-10-07 13:11:34,445 WARN L191 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 277 DAG size of output: 160 [2019-10-07 13:11:35,253 WARN L191 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2019-10-07 13:11:37,127 WARN L191 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 356 DAG size of output: 318 [2019-10-07 13:11:39,418 WARN L191 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 487 DAG size of output: 161 [2019-10-07 13:11:40,709 WARN L191 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 356 [2019-10-07 13:11:49,556 WARN L191 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 318 DAG size of output: 164 [2019-10-07 13:11:50,352 WARN L191 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-07 13:11:54,165 WARN L191 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 484 DAG size of output: 449