java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:00:08,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:00:08,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:00:08,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:00:08,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:00:08,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:00:08,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:00:08,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:00:08,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:00:08,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:00:08,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:00:08,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:00:08,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:00:08,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:00:08,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:00:08,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:00:08,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:00:08,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:00:08,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:00:08,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:00:08,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:00:08,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:00:08,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:00:08,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:00:08,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:00:08,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:00:08,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:00:08,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:00:08,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:00:08,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:00:08,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:00:08,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:00:08,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:00:08,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:00:08,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:00:08,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:00:08,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:00:08,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:00:08,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:00:08,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:00:08,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:00:08,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:00:08,162 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:00:08,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:00:08,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:00:08,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:00:08,164 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:00:08,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:00:08,165 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:00:08,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:00:08,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:00:08,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:00:08,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:00:08,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:00:08,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:00:08,166 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:00:08,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:00:08,167 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:00:08,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:00:08,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:00:08,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:00:08,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:00:08,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:00:08,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:08,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:00:08,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:00:08,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:00:08,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:00:08,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:00:08,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:00:08,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:00:08,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:00:08,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:00:08,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:00:08,476 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:00:08,477 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:00:08,478 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-10-15 03:00:08,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba399b158/2b2c80a5cf394f2ba2a8c9c0e902f7c7/FLAGc3ec7b998 [2019-10-15 03:00:09,163 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:00:09,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all.i [2019-10-15 03:00:09,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba399b158/2b2c80a5cf394f2ba2a8c9c0e902f7c7/FLAGc3ec7b998 [2019-10-15 03:00:09,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba399b158/2b2c80a5cf394f2ba2a8c9c0e902f7c7 [2019-10-15 03:00:09,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:00:09,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:00:09,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:09,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:00:09,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:00:09,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:09" (1/1) ... [2019-10-15 03:00:09,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b8ced7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:09, skipping insertion in model container [2019-10-15 03:00:09,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:09" (1/1) ... [2019-10-15 03:00:09,424 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:00:09,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:00:09,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:09,939 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:00:09,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:10,055 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:00:10,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10 WrapperNode [2019-10-15 03:00:10,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:10,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:00:10,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:00:10,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:00:10,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... [2019-10-15 03:00:10,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:00:10,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:00:10,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:00:10,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:00:10,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:10,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:00:10,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:00:10,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:00:10,178 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:00:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 03:00:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 03:00:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-15 03:00:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_first [2019-10-15 03:00:10,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:00:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:00:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:00:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:00:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:00:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:00:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:00:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:00:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:00:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:00:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:00:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:00:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:00:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:00:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:00:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:00:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:00:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:00:10,182 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:00:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:00:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:00:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:00:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:00:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:00:10,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:00:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:00:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:00:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:00:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:00:10,184 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:00:10,185 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:00:10,186 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:00:10,187 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:00:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:00:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:00:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:00:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:00:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:00:10,188 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:00:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:00:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 03:00:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:00:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:00:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:00:10,189 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:00:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:00:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:00:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:00:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:00:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:00:10,190 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:00:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:00:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:00:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:00:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:00:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:00:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:00:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:00:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:00:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:00:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:00:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:00:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:00:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:00:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:00:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:00:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:00:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:00:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:00:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:00:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 03:00:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 03:00:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:00:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:00:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:00:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-15 03:00:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_first [2019-10-15 03:00:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:00:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:00:10,607 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 03:00:10,865 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:00:10,865 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 03:00:10,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:10 BoogieIcfgContainer [2019-10-15 03:00:10,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:00:10,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:00:10,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:00:10,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:00:10,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:00:09" (1/3) ... [2019-10-15 03:00:10,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b241dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:10, skipping insertion in model container [2019-10-15 03:00:10,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:10" (2/3) ... [2019-10-15 03:00:10,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b241dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:10, skipping insertion in model container [2019-10-15 03:00:10,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:10" (3/3) ... [2019-10-15 03:00:10,874 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all.i [2019-10-15 03:00:10,882 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:00:10,890 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:00:10,901 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:00:10,923 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:00:10,923 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:00:10,923 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:00:10,924 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:00:10,924 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:00:10,924 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:00:10,924 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:00:10,924 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:00:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-15 03:00:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:00:10,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:10,951 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:10,953 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1278397699, now seen corresponding path program 1 times [2019-10-15 03:00:10,968 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:10,968 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739646043] [2019-10-15 03:00:10,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:10,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:10,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:11,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739646043] [2019-10-15 03:00:11,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:11,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:00:11,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928753810] [2019-10-15 03:00:11,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:00:11,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:11,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:00:11,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:11,258 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2019-10-15 03:00:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:11,371 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2019-10-15 03:00:11,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:00:11,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-15 03:00:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:11,383 INFO L225 Difference]: With dead ends: 60 [2019-10-15 03:00:11,383 INFO L226 Difference]: Without dead ends: 34 [2019-10-15 03:00:11,387 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:00:11,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-15 03:00:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-10-15 03:00:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-15 03:00:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2019-10-15 03:00:11,437 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2019-10-15 03:00:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:11,438 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2019-10-15 03:00:11,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:00:11,438 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2019-10-15 03:00:11,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 03:00:11,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:11,440 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:11,441 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1622784751, now seen corresponding path program 1 times [2019-10-15 03:00:11,441 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:11,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290949910] [2019-10-15 03:00:11,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:11,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:11,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:11,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290949910] [2019-10-15 03:00:11,596 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:11,596 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:11,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093786652] [2019-10-15 03:00:11,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:11,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:11,600 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2019-10-15 03:00:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:11,644 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-10-15 03:00:11,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:11,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-15 03:00:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:11,648 INFO L225 Difference]: With dead ends: 38 [2019-10-15 03:00:11,649 INFO L226 Difference]: Without dead ends: 35 [2019-10-15 03:00:11,651 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-15 03:00:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-15 03:00:11,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-15 03:00:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-15 03:00:11,663 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2019-10-15 03:00:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:11,663 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-15 03:00:11,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-15 03:00:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-15 03:00:11,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:11,667 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:11,670 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash 824673732, now seen corresponding path program 1 times [2019-10-15 03:00:11,671 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:11,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113687546] [2019-10-15 03:00:11,671 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:11,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:11,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:11,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113687546] [2019-10-15 03:00:11,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:11,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:00:11,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384534281] [2019-10-15 03:00:11,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:00:11,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:11,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:00:11,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:00:11,858 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2019-10-15 03:00:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:12,027 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2019-10-15 03:00:12,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:00:12,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-15 03:00:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:12,031 INFO L225 Difference]: With dead ends: 46 [2019-10-15 03:00:12,031 INFO L226 Difference]: Without dead ends: 43 [2019-10-15 03:00:12,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:00:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-15 03:00:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2019-10-15 03:00:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-15 03:00:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-10-15 03:00:12,040 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 33 [2019-10-15 03:00:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:12,040 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-10-15 03:00:12,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:00:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-10-15 03:00:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 03:00:12,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:12,042 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:12,042 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1805502586, now seen corresponding path program 1 times [2019-10-15 03:00:12,043 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:12,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604232120] [2019-10-15 03:00:12,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:12,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:12,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:00:12,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604232120] [2019-10-15 03:00:12,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:12,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:00:12,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449653044] [2019-10-15 03:00:12,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:00:12,331 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:00:12,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:00:12,331 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2019-10-15 03:00:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:12,462 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-10-15 03:00:12,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:00:12,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-15 03:00:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:12,465 INFO L225 Difference]: With dead ends: 55 [2019-10-15 03:00:12,465 INFO L226 Difference]: Without dead ends: 38 [2019-10-15 03:00:12,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:00:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-15 03:00:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-10-15 03:00:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-15 03:00:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2019-10-15 03:00:12,485 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 36 [2019-10-15 03:00:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:12,485 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2019-10-15 03:00:12,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:00:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2019-10-15 03:00:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 03:00:12,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:12,488 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:12,488 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1898425887, now seen corresponding path program 1 times [2019-10-15 03:00:12,492 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:12,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369382365] [2019-10-15 03:00:12,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:12,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:12,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:00:12,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369382365] [2019-10-15 03:00:12,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986010551] [2019-10-15 03:00:12,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:12,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:00:12,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:00:12,880 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 03:00:12,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [214950861] [2019-10-15 03:00:12,972 INFO L162 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-10-15 03:00:12,972 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:00:12,978 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:00:12,988 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:00:12,989 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:00:13,180 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:00:13,334 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:14,294 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:21,829 INFO L199 IcfgInterpreter]: Interpreting procedure sll_circular_create with input of size 44 for LOIs [2019-10-15 03:00:27,744 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:27,829 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 03:00:28,118 INFO L199 IcfgInterpreter]: Interpreting procedure node_create with input of size 62 for LOIs [2019-10-15 03:00:28,183 INFO L199 IcfgInterpreter]: Interpreting procedure sll_circular_remove_first with input of size 13 for LOIs [2019-10-15 03:00:28,281 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 03:00:28,284 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:00:31,616 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:00:31,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 21] total 27 [2019-10-15 03:00:31,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863267797] [2019-10-15 03:00:31,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-10-15 03:00:31,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:31,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-10-15 03:00:31,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=613, Unknown=5, NotChecked=0, Total=702 [2019-10-15 03:00:31,620 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 27 states. [2019-10-15 03:00:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:40,053 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-10-15 03:00:40,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-15 03:00:40,055 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 38 [2019-10-15 03:00:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:40,056 INFO L225 Difference]: With dead ends: 50 [2019-10-15 03:00:40,056 INFO L226 Difference]: Without dead ends: 47 [2019-10-15 03:00:40,058 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=218, Invalid=1845, Unknown=7, NotChecked=0, Total=2070 [2019-10-15 03:00:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-15 03:00:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2019-10-15 03:00:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-15 03:00:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-10-15 03:00:40,066 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 38 [2019-10-15 03:00:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:40,066 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-10-15 03:00:40,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-10-15 03:00:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-10-15 03:00:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-15 03:00:40,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:40,068 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:40,272 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:40,272 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash -562618860, now seen corresponding path program 1 times [2019-10-15 03:00:40,273 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:40,274 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102730251] [2019-10-15 03:00:40,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:40,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:40,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:40,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102730251] [2019-10-15 03:00:40,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471311668] [2019-10-15 03:00:40,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:00:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:40,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 61 conjunts are in the unsatisfiable core [2019-10-15 03:00:40,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:00:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:41,019 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:00:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:00:41,741 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [111992150] [2019-10-15 03:00:41,743 INFO L162 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-10-15 03:00:41,743 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:00:41,744 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:00:41,744 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:00:41,744 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:00:41,770 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:00:41,865 WARN L225 Elim1Store]: Array PQE input equivalent to false