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/heap-data/min_max.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:59:44,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:59:44,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:59:44,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:59:44,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:59:44,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:59:44,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:59:44,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:59:44,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:59:44,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:59:44,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:59:44,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:59:44,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:59:44,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:59:44,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:59:44,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:59:44,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:59:44,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:59:44,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:59:44,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:59:44,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:59:44,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:59:45,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:59:45,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:59:45,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:59:45,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:59:45,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:59:45,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:59:45,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:59:45,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:59:45,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:59:45,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:59:45,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:59:45,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:59:45,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:59:45,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:59:45,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:59:45,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:59:45,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:59:45,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:59:45,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:59:45,014 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 01:59:45,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:59:45,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:59:45,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:59:45,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:59:45,042 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:59:45,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:59:45,042 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:59:45,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:59:45,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:59:45,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:59:45,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:59:45,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:59:45,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:59:45,045 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:59:45,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:59:45,045 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:59:45,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:59:45,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:59:45,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:59:45,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:59:45,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:59:45,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:45,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:59:45,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:59:45,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:59:45,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:59:45,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:59:45,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:59:45,048 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 01:59:45,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:59:45,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:59:45,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:59:45,465 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:59:45,466 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:59:45,467 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/min_max.i [2019-10-15 01:59:45,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1babafeed/dd51e286e71d478f9fcb794a3f1ef694/FLAG6bc3afeec [2019-10-15 01:59:46,024 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:59:46,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/min_max.i [2019-10-15 01:59:46,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1babafeed/dd51e286e71d478f9fcb794a3f1ef694/FLAG6bc3afeec [2019-10-15 01:59:46,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1babafeed/dd51e286e71d478f9fcb794a3f1ef694 [2019-10-15 01:59:46,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:59:46,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:59:46,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:46,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:59:46,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:59:46,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528d6d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46, skipping insertion in model container [2019-10-15 01:59:46,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,403 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:59:46,456 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:59:46,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:46,952 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:59:47,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:47,059 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:59:47,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47 WrapperNode [2019-10-15 01:59:47,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:47,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:59:47,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:59:47,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:59:47,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (1/1) ... [2019-10-15 01:59:47,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:59:47,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:59:47,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:59:47,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:59:47,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (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 01:59:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:59:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:59:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:59:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:59:47,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:59:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:59:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:59:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:59:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:59:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:59:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:59:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:59:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:59:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:59:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:59:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:59:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:59:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:59:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:59:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:59:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:59:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:59:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:59:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:59:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:59:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:59:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:59:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:59:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:59:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:59:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:59:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:59:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:59:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:59:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:59:47,220 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:59:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:59:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:59:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:59:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:59:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:59:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:59:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:59:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:59:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:59:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:59:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:59:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:59:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:59:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:59:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:59:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:59:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:59:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:59:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:59:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:59:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:59:47,227 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:59:47,228 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:59:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:59:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:59:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:59:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:59:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:59:47,229 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:59:47,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:59:47,231 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:59:47,232 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:59:47,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:59:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:59:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:59:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:59:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:59:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:59:47,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:59:47,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:59:47,811 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:59:47,811 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:59:47,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:47 BoogieIcfgContainer [2019-10-15 01:59:47,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:59:47,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:59:47,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:59:47,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:59:47,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:46" (1/3) ... [2019-10-15 01:59:47,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a712a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:47, skipping insertion in model container [2019-10-15 01:59:47,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:47" (2/3) ... [2019-10-15 01:59:47,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a712a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:47, skipping insertion in model container [2019-10-15 01:59:47,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:47" (3/3) ... [2019-10-15 01:59:47,821 INFO L109 eAbstractionObserver]: Analyzing ICFG min_max.i [2019-10-15 01:59:47,831 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:59:47,840 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-10-15 01:59:47,852 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-10-15 01:59:47,877 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:59:47,877 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:59:47,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:59:47,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:59:47,878 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:59:47,878 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:59:47,878 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:59:47,878 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:59:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 01:59:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:59:47,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:47,902 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:47,904 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1429863863, now seen corresponding path program 1 times [2019-10-15 01:59:47,919 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:47,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301537167] [2019-10-15 01:59:47,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:47,920 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:47,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:48,047 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 01:59:48,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301537167] [2019-10-15 01:59:48,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:48,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:59:48,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941817319] [2019-10-15 01:59:48,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:59:48,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:48,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:59:48,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:48,067 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-15 01:59:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:48,085 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-10-15 01:59:48,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:59:48,087 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:59:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:48,095 INFO L225 Difference]: With dead ends: 33 [2019-10-15 01:59:48,095 INFO L226 Difference]: Without dead ends: 17 [2019-10-15 01:59:48,099 INFO L600 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 [2019-10-15 01:59:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-15 01:59:48,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-15 01:59:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 01:59:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-15 01:59:48,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2019-10-15 01:59:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:48,138 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-15 01:59:48,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:59:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-15 01:59:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:59:48,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:48,140 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:48,140 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1966507701, now seen corresponding path program 1 times [2019-10-15 01:59:48,141 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:48,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143418557] [2019-10-15 01:59:48,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:48,265 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 01:59:48,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143418557] [2019-10-15 01:59:48,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:48,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:59:48,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823648786] [2019-10-15 01:59:48,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:59:48,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:48,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:59:48,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:59:48,270 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-10-15 01:59:48,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:48,331 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-10-15 01:59:48,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:59:48,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-15 01:59:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:48,333 INFO L225 Difference]: With dead ends: 30 [2019-10-15 01:59:48,333 INFO L226 Difference]: Without dead ends: 19 [2019-10-15 01:59:48,334 INFO L600 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 [2019-10-15 01:59:48,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-15 01:59:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-15 01:59:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 01:59:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-15 01:59:48,340 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2019-10-15 01:59:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:48,341 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-15 01:59:48,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:59:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-15 01:59:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:59:48,342 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:48,342 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:48,342 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:48,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:48,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1351145807, now seen corresponding path program 1 times [2019-10-15 01:59:48,343 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:48,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846121602] [2019-10-15 01:59:48,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,344 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:48,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846121602] [2019-10-15 01:59:48,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:48,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:59:48,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422687412] [2019-10-15 01:59:48,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:59:48,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:59:48,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:48,565 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2019-10-15 01:59:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:48,667 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-10-15 01:59:48,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:59:48,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-15 01:59:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:48,669 INFO L225 Difference]: With dead ends: 28 [2019-10-15 01:59:48,669 INFO L226 Difference]: Without dead ends: 26 [2019-10-15 01:59:48,670 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:59:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-15 01:59:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2019-10-15 01:59:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 01:59:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-15 01:59:48,679 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2019-10-15 01:59:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:48,680 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-15 01:59:48,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:59:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-15 01:59:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 01:59:48,685 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:48,685 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:48,685 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:48,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:48,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1370871501, now seen corresponding path program 1 times [2019-10-15 01:59:48,686 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:48,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84707537] [2019-10-15 01:59:48,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,687 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:48,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84707537] [2019-10-15 01:59:48,948 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:48,948 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:59:48,948 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771179303] [2019-10-15 01:59:48,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:59:48,949 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:48,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:59:48,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:59:48,950 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2019-10-15 01:59:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:49,087 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-10-15 01:59:49,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:59:49,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-15 01:59:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:49,091 INFO L225 Difference]: With dead ends: 26 [2019-10-15 01:59:49,091 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 01:59:49,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:59:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 01:59:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-10-15 01:59:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:59:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-15 01:59:49,099 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2019-10-15 01:59:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:49,101 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-15 01:59:49,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:59:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-15 01:59:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:59:49,102 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:49,102 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:49,102 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:49,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:49,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1215014229, now seen corresponding path program 1 times [2019-10-15 01:59:49,103 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:49,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060347055] [2019-10-15 01:59:49,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:49,104 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:49,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:49,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060347055] [2019-10-15 01:59:49,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758770802] [2019-10-15 01:59:49,220 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 01:59:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:49,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 01:59:49,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:49,389 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-15 01:59:49,390 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,402 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,408 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-15 01:59:49,409 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,414 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,415 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,415 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-10-15 01:59:49,433 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-15 01:59:49,434 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,442 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,452 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-15 01:59:49,452 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,457 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,458 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,458 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-15 01:59:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:49,461 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:59:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:49,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [757425122] [2019-10-15 01:59:49,534 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-15 01:59:49,535 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:59:49,542 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:59:49,557 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:59:49,558 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:59:49,724 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:59:50,871 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 1231 [2019-10-15 01:59:51,210 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 1227 [2019-10-15 01:59:51,525 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 1223 [2019-10-15 01:59:51,750 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 1219 [2019-10-15 01:59:51,952 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 1215 [2019-10-15 01:59:52,130 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 1211 [2019-10-15 01:59:54,361 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 1207 [2019-10-15 01:59:54,553 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 1203 [2019-10-15 02:00:09,943 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 1167