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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:12:10,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:12:10,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:12:10,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:12:10,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:12:10,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:12:10,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:12:10,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:12:10,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:12:10,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:12:10,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:12:10,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:12:10,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:12:10,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:12:10,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:12:10,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:12:10,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:12:10,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:12:10,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:12:10,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:12:10,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:12:10,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:12:10,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:12:10,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:12:10,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:12:10,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:12:10,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:12:10,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:12:10,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:12:10,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:12:10,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:12:10,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:12:10,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:12:10,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:12:10,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:12:10,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:12:10,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:12:10,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:12:10,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:12:10,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:12:10,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:12:10,948 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 [2019-10-13 20:12:10,968 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:12:10,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:12:10,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:12:10,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:12:10,970 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:12:10,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:12:10,971 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:12:10,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:12:10,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:12:10,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:12:10,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:12:10,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:12:10,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:12:10,973 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:12:10,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:12:10,974 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:12:10,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:12:10,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:12:10,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:12:10,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:12:10,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:12:10,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:12:10,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:12:10,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:12:10,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:12:10,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:12:10,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:12:10,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:12:10,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:12:11,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:12:11,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:12:11,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:12:11,303 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:12:11,304 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:12:11,305 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2019-10-13 20:12:11,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e3e71c1/a169588309b44b2ca7faa5588ba77137/FLAGc6023c781 [2019-10-13 20:12:11,912 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:12:11,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-buckets-1.i [2019-10-13 20:12:11,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e3e71c1/a169588309b44b2ca7faa5588ba77137/FLAGc6023c781 [2019-10-13 20:12:12,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e3e71c1/a169588309b44b2ca7faa5588ba77137 [2019-10-13 20:12:12,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:12:12,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:12:12,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:12:12,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:12:12,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:12:12,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b14516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12, skipping insertion in model container [2019-10-13 20:12:12,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,227 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:12:12,272 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:12:12,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:12:12,743 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:12:12,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:12:12,858 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:12:12,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12 WrapperNode [2019-10-13 20:12:12,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:12:12,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:12:12,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:12:12,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:12:12,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (1/1) ... [2019-10-13 20:12:12,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:12:12,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:12:12,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:12:12,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:12:12,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (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 [2019-10-13 20:12:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:12:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:12:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:12:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 20:12:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 20:12:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 20:12:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 20:12:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 20:12:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 20:12:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 20:12:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 20:12:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 20:12:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 20:12:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 20:12:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 20:12:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 20:12:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 20:12:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 20:12:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 20:12:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 20:12:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 20:12:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 20:12:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 20:12:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 20:12:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 20:12:13,003 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 20:12:13,004 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 20:12:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 20:12:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 20:12:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 20:12:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 20:12:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 20:12:13,005 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 20:12:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 20:12:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 20:12:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 20:12:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 20:12:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 20:12:13,006 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 20:12:13,007 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 20:12:13,008 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 20:12:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 20:12:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 20:12:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 20:12:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 20:12:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 20:12:13,009 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 20:12:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 20:12:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 20:12:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 20:12:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 20:12:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 20:12:13,010 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 20:12:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 20:12:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 20:12:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 20:12:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 20:12:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 20:12:13,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 20:12:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 20:12:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 20:12:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 20:12:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 20:12:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 20:12:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 20:12:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 20:12:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 20:12:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 20:12:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 20:12:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 20:12:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 20:12:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 20:12:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:12:13,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:12:13,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:12:13,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:12:13,699 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-10-13 20:12:13,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:13 BoogieIcfgContainer [2019-10-13 20:12:13,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:12:13,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:12:13,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:12:13,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:12:13,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:12:12" (1/3) ... [2019-10-13 20:12:13,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ae7a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:13, skipping insertion in model container [2019-10-13 20:12:13,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:12" (2/3) ... [2019-10-13 20:12:13,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ae7a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:13, skipping insertion in model container [2019-10-13 20:12:13,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:13" (3/3) ... [2019-10-13 20:12:13,711 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2019-10-13 20:12:13,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:12:13,731 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-13 20:12:13,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-13 20:12:13,781 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:12:13,781 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:12:13,782 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:12:13,783 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:12:13,786 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:12:13,787 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:12:13,787 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:12:13,787 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:12:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-10-13 20:12:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 20:12:13,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:13,830 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:13,836 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:13,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1953697339, now seen corresponding path program 1 times [2019-10-13 20:12:13,853 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:13,854 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319260777] [2019-10-13 20:12:13,854 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:13,855 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:13,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:14,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319260777] [2019-10-13 20:12:14,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:12:14,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 20:12:14,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768691819] [2019-10-13 20:12:14,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 20:12:14,176 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:14,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 20:12:14,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 20:12:14,194 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2019-10-13 20:12:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:14,324 INFO L93 Difference]: Finished difference Result 118 states and 194 transitions. [2019-10-13 20:12:14,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 20:12:14,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-13 20:12:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:14,338 INFO L225 Difference]: With dead ends: 118 [2019-10-13 20:12:14,339 INFO L226 Difference]: Without dead ends: 70 [2019-10-13 20:12:14,343 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 [2019-10-13 20:12:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-13 20:12:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2019-10-13 20:12:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-13 20:12:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2019-10-13 20:12:14,396 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2019-10-13 20:12:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:14,396 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2019-10-13 20:12:14,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 20:12:14,397 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2019-10-13 20:12:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 20:12:14,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:14,397 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:14,398 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash 471340906, now seen corresponding path program 1 times [2019-10-13 20:12:14,399 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:14,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737824972] [2019-10-13 20:12:14,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:14,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:14,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:14,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737824972] [2019-10-13 20:12:14,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:12:14,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:12:14,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913651346] [2019-10-13 20:12:14,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:12:14,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:12:14,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:12:14,504 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 3 states. [2019-10-13 20:12:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:14,558 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-10-13 20:12:14,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:12:14,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 20:12:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:14,560 INFO L225 Difference]: With dead ends: 49 [2019-10-13 20:12:14,560 INFO L226 Difference]: Without dead ends: 47 [2019-10-13 20:12:14,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:12:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-13 20:12:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-10-13 20:12:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-13 20:12:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-10-13 20:12:14,569 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 13 [2019-10-13 20:12:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:14,569 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-10-13 20:12:14,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:12:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-10-13 20:12:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 20:12:14,570 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:14,570 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:14,571 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:14,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1726702173, now seen corresponding path program 1 times [2019-10-13 20:12:14,571 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:14,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593632709] [2019-10-13 20:12:14,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:14,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:14,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:14,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593632709] [2019-10-13 20:12:14,795 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:12:14,795 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 20:12:14,795 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433080534] [2019-10-13 20:12:14,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 20:12:14,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:14,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 20:12:14,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 20:12:14,796 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 5 states. [2019-10-13 20:12:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:14,985 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2019-10-13 20:12:14,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:12:14,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-13 20:12:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:14,989 INFO L225 Difference]: With dead ends: 65 [2019-10-13 20:12:14,989 INFO L226 Difference]: Without dead ends: 54 [2019-10-13 20:12:14,989 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-13 20:12:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-13 20:12:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2019-10-13 20:12:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-13 20:12:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-10-13 20:12:14,999 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 14 [2019-10-13 20:12:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:14,999 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-10-13 20:12:14,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 20:12:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-10-13 20:12:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 20:12:15,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:15,000 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:15,001 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:15,001 INFO L82 PathProgramCache]: Analyzing trace with hash 602561823, now seen corresponding path program 1 times [2019-10-13 20:12:15,001 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:15,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587606392] [2019-10-13 20:12:15,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:15,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:15,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:15,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587606392] [2019-10-13 20:12:15,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:12:15,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:12:15,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029102570] [2019-10-13 20:12:15,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:12:15,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:12:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:12:15,042 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 3 states. [2019-10-13 20:12:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:15,143 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2019-10-13 20:12:15,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:12:15,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 20:12:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:15,145 INFO L225 Difference]: With dead ends: 49 [2019-10-13 20:12:15,145 INFO L226 Difference]: Without dead ends: 47 [2019-10-13 20:12:15,146 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:12:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-13 20:12:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-10-13 20:12:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-13 20:12:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2019-10-13 20:12:15,152 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 14 [2019-10-13 20:12:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:15,153 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2019-10-13 20:12:15,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:12:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2019-10-13 20:12:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 20:12:15,154 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:12:15,154 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:12:15,154 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:12:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2131101984, now seen corresponding path program 1 times [2019-10-13 20:12:15,155 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:12:15,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767478447] [2019-10-13 20:12:15,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:15,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:12:15,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:12:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:15,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767478447] [2019-10-13 20:12:15,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299670428] [2019-10-13 20:12:15,558 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 [2019-10-13 20:12:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:12:15,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 40 conjunts are in the unsatisfiable core [2019-10-13 20:12:15,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:12:16,076 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:16,076 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2019-10-13 20:12:16,077 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:16,505 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-10-13 20:12:16,505 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:16,516 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_37|, |v_#memory_$Pointer$.offset_37|, |v_#memory_$Pointer$.base_38|, |v_#memory_$Pointer$.offset_39|], 1=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_38|]} [2019-10-13 20:12:16,549 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:16,660 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2019-10-13 20:12:16,661 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:16,869 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-10-13 20:12:16,870 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:16,889 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 20:12:17,045 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-13 20:12:17,046 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:17,057 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 20:12:17,169 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-10-13 20:12:17,170 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:17,192 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,211 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2019-10-13 20:12:17,212 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,268 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:17,278 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,287 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2019-10-13 20:12:17,288 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,383 INFO L567 ElimStorePlain]: treesize reduction 4, result has 96.7 percent of original size [2019-10-13 20:12:17,394 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,397 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,401 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2019-10-13 20:12:17,402 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,450 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:17,452 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,453 INFO L221 ElimStorePlain]: Needed 8 recursive calls to eliminate 9 variables, input treesize:207, output treesize:150 [2019-10-13 20:12:17,600 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,601 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 20:12:17,682 INFO L341 Elim1Store]: treesize reduction 8, result has 91.6 percent of original size [2019-10-13 20:12:17,683 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 144 treesize of output 171 [2019-10-13 20:12:17,688 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,780 INFO L567 ElimStorePlain]: treesize reduction 164, result has 49.8 percent of original size [2019-10-13 20:12:17,790 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,793 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,795 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 87 [2019-10-13 20:12:17,797 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,849 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:17,850 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 20:12:17,850 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:176, output treesize:150 [2019-10-13 20:12:17,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:17,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 20:12:17,925 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-13 20:12:17,996 INFO L341 Elim1Store]: treesize reduction 16, result has 76.5 percent of original size [2019-10-13 20:12:17,997 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 171 treesize of output 126 [2019-10-13 20:12:17,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 20:12:18,014 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-13 20:12:18,073 INFO L567 ElimStorePlain]: treesize reduction 20, result has 78.9 percent of original size [2019-10-13 20:12:18,087 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:18,087 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 43 [2019-10-13 20:12:18,089 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 20:12:18,099 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 20:12:18,100 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 20:12:18,100 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:185, output treesize:7 [2019-10-13 20:12:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:18,105 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:12:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 20:12:18,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [793325157] [2019-10-13 20:12:18,276 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 20 [2019-10-13 20:12:18,314 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 20:12:18,315 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 20:12:18,382 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 20:12:18,383 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 43 variables. [2019-10-13 20:12:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:12:18,388 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 20:12:18,423 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 20:12:18,424 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 20:12:18,425 INFO L553 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-10-13 20:12:18,425 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 20:12:18,426 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 20:12:18,426 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 6, 7] total 14 [2019-10-13 20:12:18,426 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283844919] [2019-10-13 20:12:18,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 20:12:18,427 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 20:12:18,428 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 20:12:18,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 20:12:18,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 20:12:18,428 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 2 states. [2019-10-13 20:12:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:12:18,430 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-10-13 20:12:18,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 20:12:18,430 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-13 20:12:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:12:18,431 INFO L225 Difference]: With dead ends: 46 [2019-10-13 20:12:18,431 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 20:12:18,435 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 20:12:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 20:12:18,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 20:12:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 20:12:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 20:12:18,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-10-13 20:12:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:12:18,436 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 20:12:18,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 20:12:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 20:12:18,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 20:12:18,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:12:18,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 20:12:18,668 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 20:12:18,669 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 20:12:18,669 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 20:12:18,669 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 20:12:18,669 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 20:12:18,669 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 20:12:18,669 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 990 1061) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point L1010-1(lines 1010 1038) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point L1010-3(lines 1010 1038) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1023) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point L1027(line 1027) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point L1027-2(line 1027) no Hoare annotation was computed. [2019-10-13 20:12:18,670 INFO L443 ceAbstractionStarter]: For program point L1027-3(lines 1011 1038) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point L1027-4(line 1027) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point L1053(line 1053) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point L1053-2(line 1053) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point L1053-3(lines 1043 1058) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point L1053-4(line 1053) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 990 1061) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 1027) no Hoare annotation was computed. [2019-10-13 20:12:18,671 INFO L443 ceAbstractionStarter]: For program point L1029(lines 1029 1037) no Hoare annotation was computed. [2019-10-13 20:12:18,672 INFO L439 ceAbstractionStarter]: At program point L1029-2(lines 1010 1038) the Hoare annotation is: false [2019-10-13 20:12:18,672 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 990 1061) the Hoare annotation is: true [2019-10-13 20:12:18,672 INFO L439 ceAbstractionStarter]: At program point L1046-2(lines 1046 1052) the Hoare annotation is: false [2019-10-13 20:12:18,672 INFO L443 ceAbstractionStarter]: For program point L1014(lines 1014 1019) no Hoare annotation was computed. [2019-10-13 20:12:18,672 INFO L443 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 1053) no Hoare annotation was computed. [2019-10-13 20:12:18,672 INFO L443 ceAbstractionStarter]: For program point L1023-1(line 1023) no Hoare annotation was computed. [2019-10-13 20:12:18,672 INFO L443 ceAbstractionStarter]: For program point L1023-3(line 1023) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L439 ceAbstractionStarter]: At program point L1023-4(line 1023) the Hoare annotation is: false [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 1024) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point L1024(line 1024) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point L1024-2(line 1024) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point L1024-3(lines 1011 1038) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point L1016(lines 1016 1019) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point L1016-2(lines 1014 1019) no Hoare annotation was computed. [2019-10-13 20:12:18,673 INFO L443 ceAbstractionStarter]: For program point L1025(lines 1025 1026) no Hoare annotation was computed. [2019-10-13 20:12:18,674 INFO L443 ceAbstractionStarter]: For program point L1025-2(lines 1011 1038) no Hoare annotation was computed. [2019-10-13 20:12:18,674 INFO L443 ceAbstractionStarter]: For program point L1050-1(line 1050) no Hoare annotation was computed. [2019-10-13 20:12:18,674 INFO L443 ceAbstractionStarter]: For program point L1050-2(line 1050) no Hoare annotation was computed. [2019-10-13 20:12:18,674 INFO L443 ceAbstractionStarter]: For program point L1050-4(line 1050) no Hoare annotation was computed. [2019-10-13 20:12:18,674 INFO L439 ceAbstractionStarter]: At program point L1050-5(line 1050) the Hoare annotation is: false [2019-10-13 20:12:18,674 INFO L443 ceAbstractionStarter]: For program point L1050-6(line 1050) no Hoare annotation was computed. [2019-10-13 20:12:18,674 INFO L439 ceAbstractionStarter]: At program point L1042-2(lines 1042 1058) the Hoare annotation is: false [2019-10-13 20:12:18,674 INFO L443 ceAbstractionStarter]: For program point L1042-3(lines 1042 1058) no Hoare annotation was computed. [2019-10-13 20:12:18,675 INFO L443 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 1050) no Hoare annotation was computed. [2019-10-13 20:12:18,675 INFO L443 ceAbstractionStarter]: For program point L1034-1(lines 1034 1035) no Hoare annotation was computed. [2019-10-13 20:12:18,675 INFO L439 ceAbstractionStarter]: At program point L1034-3(lines 1034 1035) the Hoare annotation is: false [2019-10-13 20:12:18,675 INFO L443 ceAbstractionStarter]: For program point L1034-4(lines 1034 1035) no Hoare annotation was computed. [2019-10-13 20:12:18,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:12:18 BoogieIcfgContainer [2019-10-13 20:12:18,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 20:12:18,686 INFO L168 Benchmark]: Toolchain (without parser) took 6472.77 ms. Allocated memory was 138.4 MB in the beginning and 248.0 MB in the end (delta: 109.6 MB). Free memory was 100.7 MB in the beginning and 133.9 MB in the end (delta: -33.2 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2019-10-13 20:12:18,687 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 20:12:18,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.00 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 169.3 MB in the end (delta: -68.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-10-13 20:12:18,688 INFO L168 Benchmark]: Boogie Preprocessor took 81.62 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-13 20:12:18,689 INFO L168 Benchmark]: RCFGBuilder took 758.58 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 112.8 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2019-10-13 20:12:18,690 INFO L168 Benchmark]: TraceAbstraction took 4981.87 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 112.2 MB in the beginning and 133.9 MB in the end (delta: -21.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-10-13 20:12:18,694 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.00 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 169.3 MB in the end (delta: -68.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.62 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 758.58 ms. Allocated memory is still 202.9 MB. Free memory was 166.0 MB in the beginning and 112.8 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4981.87 ms. Allocated memory was 202.9 MB in the beginning and 248.0 MB in the end (delta: 45.1 MB). Free memory was 112.2 MB in the beginning and 133.9 MB in the end (delta: -21.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1027]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1024]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1023]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1050]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1053]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 1042]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1050]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1046]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1010]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1034]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 1023]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 5 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 148 SDslu, 177 SDs, 0 SdLazy, 106 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 10 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 49389 SizeOfPredicates, 13 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 112, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.75, AVG_VARS_REMOVED_DURING_WEAKENING: 2.2222222222222223, AVG_WEAKENED_CONJUNCTS: 0.3333333333333333, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...