/usr/bin/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/forester-heap/sll-rb-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:09:33,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:09:33,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:09:33,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:09:33,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:09:33,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:09:33,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:09:33,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:09:33,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:09:33,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:09:33,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:09:33,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:09:33,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:09:33,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:09:33,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:09:33,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:09:33,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:09:33,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:09:33,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:09:33,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:09:33,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:09:33,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:09:33,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:09:33,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:09:33,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:09:33,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:09:33,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:09:33,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:09:33,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:09:33,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:09:33,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:09:33,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:09:33,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:09:33,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:09:33,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:09:33,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:09:33,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:09:33,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:09:33,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:09:33,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:09:33,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:09:33,916 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 [2019-11-07 02:09:33,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:09:33,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:09:33,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:09:33,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:09:33,957 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:09:33,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:09:33,958 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:09:33,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:09:33,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:09:33,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:09:33,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:09:33,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:09:33,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:09:33,959 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:09:33,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:09:33,959 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:09:33,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:09:33,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:09:33,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:09:33,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:09:33,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:09:33,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:09:33,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:09:33,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:09:33,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:09:33,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:09:33,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:09:33,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:09:33,962 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 [2019-11-07 02:09:34,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:09:34,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:09:34,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:09:34,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:09:34,266 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:09:34,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2019-11-07 02:09:34,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a254de353/5f94922eec15457eafff064106661a8a/FLAG229c3f18b [2019-11-07 02:09:34,879 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:09:34,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2019-11-07 02:09:34,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a254de353/5f94922eec15457eafff064106661a8a/FLAG229c3f18b [2019-11-07 02:09:35,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a254de353/5f94922eec15457eafff064106661a8a [2019-11-07 02:09:35,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:09:35,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:09:35,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:09:35,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:09:35,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:09:35,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b650637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35, skipping insertion in model container [2019-11-07 02:09:35,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,197 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:09:35,252 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:09:35,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:09:35,715 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:09:35,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:09:35,810 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:09:35,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35 WrapperNode [2019-11-07 02:09:35,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:09:35,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:09:35,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:09:35,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:09:35,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (1/1) ... [2019-11-07 02:09:35,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:09:35,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:09:35,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:09:35,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:09:35,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (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 [2019-11-07 02:09:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:09:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:09:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:09:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 02:09:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 02:09:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 02:09:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 02:09:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 02:09:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 02:09:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 02:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 02:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 02:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 02:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 02:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 02:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 02:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 02:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 02:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 02:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 02:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 02:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 02:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 02:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 02:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 02:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 02:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 02:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 02:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 02:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 02:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 02:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 02:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 02:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 02:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 02:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 02:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 02:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 02:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 02:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 02:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 02:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 02:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 02:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 02:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 02:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 02:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 02:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 02:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 02:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 02:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 02:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 02:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 02:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 02:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 02:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 02:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 02:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 02:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 02:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 02:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 02:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:09:36,691 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:09:36,691 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-07 02:09:36,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:36 BoogieIcfgContainer [2019-11-07 02:09:36,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:09:36,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:09:36,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:09:36,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:09:36,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:35" (1/3) ... [2019-11-07 02:09:36,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265bee52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:36, skipping insertion in model container [2019-11-07 02:09:36,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:35" (2/3) ... [2019-11-07 02:09:36,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265bee52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:36, skipping insertion in model container [2019-11-07 02:09:36,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:36" (3/3) ... [2019-11-07 02:09:36,701 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2019-11-07 02:09:36,712 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:09:36,721 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-07 02:09:36,733 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-07 02:09:36,758 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:09:36,759 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:09:36,759 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:09:36,759 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:09:36,759 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:09:36,760 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:09:36,760 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:09:36,760 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:09:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-07 02:09:36,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-07 02:09:36,786 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:09:36,787 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:09:36,789 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:09:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:09:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1881121825, now seen corresponding path program 1 times [2019-11-07 02:09:36,806 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:09:36,806 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554212828] [2019-11-07 02:09:36,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:09:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:09:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:09:36,948 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554212828] [2019-11-07 02:09:36,949 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:09:36,950 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 02:09:36,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842862550] [2019-11-07 02:09:36,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 02:09:36,960 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:09:36,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 02:09:36,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 02:09:36,978 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-11-07 02:09:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:09:37,003 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2019-11-07 02:09:37,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 02:09:37,005 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-07 02:09:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:09:37,015 INFO L225 Difference]: With dead ends: 59 [2019-11-07 02:09:37,015 INFO L226 Difference]: Without dead ends: 29 [2019-11-07 02:09:37,019 INFO L630 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 [2019-11-07 02:09:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-07 02:09:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-07 02:09:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-07 02:09:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-07 02:09:37,057 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2019-11-07 02:09:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:09:37,058 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-07 02:09:37,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 02:09:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-07 02:09:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 02:09:37,059 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:09:37,059 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:09:37,059 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:09:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:09:37,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1802396536, now seen corresponding path program 1 times [2019-11-07 02:09:37,060 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:09:37,061 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959036357] [2019-11-07 02:09:37,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:09:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:09:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:09:37,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959036357] [2019-11-07 02:09:37,190 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:09:37,190 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:09:37,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853795889] [2019-11-07 02:09:37,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:09:37,192 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:09:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:09:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:09:37,193 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2019-11-07 02:09:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:09:37,292 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-07 02:09:37,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:09:37,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-07 02:09:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:09:37,294 INFO L225 Difference]: With dead ends: 32 [2019-11-07 02:09:37,294 INFO L226 Difference]: Without dead ends: 30 [2019-11-07 02:09:37,297 INFO L630 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 [2019-11-07 02:09:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-07 02:09:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-07 02:09:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-07 02:09:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-11-07 02:09:37,305 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2019-11-07 02:09:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:09:37,308 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-11-07 02:09:37,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:09:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-11-07 02:09:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-07 02:09:37,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:09:37,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:09:37,311 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:09:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:09:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -481985199, now seen corresponding path program 1 times [2019-11-07 02:09:37,311 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:09:37,312 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471512225] [2019-11-07 02:09:37,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:09:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:09:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:09:37,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471512225] [2019-11-07 02:09:37,441 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:09:37,441 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:09:37,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889867993] [2019-11-07 02:09:37,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:09:37,442 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:09:37,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:09:37,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:09:37,443 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2019-11-07 02:09:37,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:09:37,616 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-11-07 02:09:37,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 02:09:37,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-07 02:09:37,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:09:37,618 INFO L225 Difference]: With dead ends: 52 [2019-11-07 02:09:37,618 INFO L226 Difference]: Without dead ends: 50 [2019-11-07 02:09:37,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 02:09:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-07 02:09:37,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2019-11-07 02:09:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 02:09:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-11-07 02:09:37,627 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 13 [2019-11-07 02:09:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:09:37,628 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-11-07 02:09:37,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:09:37,628 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-11-07 02:09:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 02:09:37,630 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:09:37,630 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:09:37,630 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:09:37,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:09:37,631 INFO L82 PathProgramCache]: Analyzing trace with hash -973296707, now seen corresponding path program 1 times [2019-11-07 02:09:37,631 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:09:37,631 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537655344] [2019-11-07 02:09:37,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:09:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:09:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:09:38,033 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537655344] [2019-11-07 02:09:38,033 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084878754] [2019-11-07 02:09:38,033 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 [2019-11-07 02:09:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:09:38,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-07 02:09:38,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:09:38,265 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-11-07 02:09:38,265 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:38,289 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:38,295 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 13 treesize of output 9 [2019-11-07 02:09:38,296 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:38,305 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:38,306 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:09:38,306 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2019-11-07 02:09:38,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:09:38,377 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_33|], 4=[v_prenex_9]} [2019-11-07 02:09:38,660 INFO L235 Elim1Store]: Index analysis took 119 ms [2019-11-07 02:09:38,675 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:38,676 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 145 treesize of output 149 [2019-11-07 02:09:38,679 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:43,839 WARN L191 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 158 [2019-11-07 02:09:43,840 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:44,869 INFO L235 Elim1Store]: Index analysis took 248 ms [2019-11-07 02:09:44,890 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:44,892 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 259 treesize of output 277 [2019-11-07 02:09:44,894 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:48,655 WARN L191 SmtUtils]: Spent 3.76 s on a formula simplification that was a NOOP. DAG size: 155 [2019-11-07 02:09:48,656 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:48,681 INFO L392 ElimStorePlain]: Different costs {0=[v_prenex_8, |v_#memory_$Pointer$.base_34|, v_prenex_10, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, v_prenex_1, |v_#memory_int_46|, |v_#memory_$Pointer$.offset_34|, v_prenex_7], 2=[|v_#memory_int_44|, |v_#memory_int_45|, |v_#memory_int_47|, v_prenex_3, v_prenex_5, |v_#memory_int_43|], 4=[v_prenex_4], 6=[|v_#memory_$Pointer$.offset_33|, |v_#memory_$Pointer$.base_33|]} [2019-11-07 02:09:48,726 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:51,343 WARN L191 SmtUtils]: Spent 2.62 s on a formula simplification that was a NOOP. DAG size: 145 [2019-11-07 02:09:51,343 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:51,438 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:09:51,664 INFO L235 Elim1Store]: Index analysis took 250 ms [2019-11-07 02:09:51,668 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 115 [2019-11-07 02:09:51,669 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:54,258 WARN L191 SmtUtils]: Spent 2.59 s on a formula simplification that was a NOOP. DAG size: 140 [2019-11-07 02:09:54,258 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:54,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:09:54,364 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 218 treesize of output 194 [2019-11-07 02:09:54,365 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:55,761 WARN L191 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 135 [2019-11-07 02:09:55,761 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:55,874 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 107 [2019-11-07 02:09:55,875 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:57,364 WARN L191 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 128 [2019-11-07 02:09:57,365 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:57,465 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:58,836 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 116 [2019-11-07 02:09:58,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:58,862 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:09:59,016 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 194 treesize of output 170 [2019-11-07 02:09:59,016 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-11-07 02:09:59,692 WARN L191 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-07 02:09:59,693 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:09:59,704 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:00,518 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-11-07 02:10:00,519 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:00,519 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_34| vanished before elimination [2019-11-07 02:10:00,527 INFO L496 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:00,874 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-11-07 02:10:00,874 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:00,880 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:01,198 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-11-07 02:10:01,199 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:01,204 INFO L496 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:01,429 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2019-11-07 02:10:01,429 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:01,462 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:10:01,476 INFO L341 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2019-11-07 02:10:01,477 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 46 [2019-11-07 02:10:01,478 INFO L496 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:01,614 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2019-11-07 02:10:01,615 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:01,621 INFO L496 ElimStorePlain]: Start of recursive call 15: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:01,731 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-11-07 02:10:01,732 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:01,748 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:10:01,755 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 104 [2019-11-07 02:10:01,756 INFO L496 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:01,832 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:01,838 INFO L496 ElimStorePlain]: Start of recursive call 17: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:01,942 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-11-07 02:10:01,943 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:01,954 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:10:01,956 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:10:01,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:10:01,977 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 103 [2019-11-07 02:10:01,979 INFO L496 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:02,062 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:02,072 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 89 [2019-11-07 02:10:02,073 INFO L496 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:02,149 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:02,159 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 75 [2019-11-07 02:10:02,160 INFO L496 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:02,209 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:02,212 INFO L496 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, 18 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2019-11-07 02:10:02,212 INFO L221 ElimStorePlain]: Needed 20 recursive calls to eliminate 27 variables, input treesize:404, output treesize:72 [2019-11-07 02:10:02,312 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2019-11-07 02:10:02,313 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:02,317 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:02,317 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:10:02,318 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:28, output treesize:3 [2019-11-07 02:10:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:10:02,321 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:10:02,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:10:02,398 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_35|, |#memory_$Pointer$.base|, |#memory_$Pointer$.offset|, v_prenex_12, |v_#memory_$Pointer$.offset_35|, v_prenex_18, v_prenex_17, v_prenex_16], 2=[|v_#memory_int_44|, v_prenex_13, |v_#memory_int_43|], 3=[v_prenex_14, |v_#memory_int_46|], 4=[|v_#memory_int_45|], 6=[|v_#memory_$Pointer$.offset_33|, |v_#memory_$Pointer$.base_33|]} [2019-11-07 02:10:02,426 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:03,342 WARN L191 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-11-07 02:10:03,342 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:03,444 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 02:10:03,606 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-11-07 02:10:03,607 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 218 treesize of output 216 [2019-11-07 02:10:03,608 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:04,867 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 158 [2019-11-07 02:10:04,868 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:04,972 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 02:10:05,062 INFO L235 Elim1Store]: Index analysis took 132 ms [2019-11-07 02:10:05,391 INFO L341 Elim1Store]: treesize reduction 49, result has 43.7 percent of original size [2019-11-07 02:10:05,392 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 216 treesize of output 214 [2019-11-07 02:10:05,393 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:07,789 WARN L191 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 155 [2019-11-07 02:10:07,790 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:07,820 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:09,431 WARN L191 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 142 [2019-11-07 02:10:09,431 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:09,457 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:09,913 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2019-11-07 02:10:09,913 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:09,919 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:10,121 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-11-07 02:10:10,121 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:10,121 INFO L464 ElimStorePlain]: Eliminatee v_prenex_17 vanished before elimination [2019-11-07 02:10:10,122 INFO L464 ElimStorePlain]: Eliminatee v_prenex_16 vanished before elimination [2019-11-07 02:10:10,128 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:10,344 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-11-07 02:10:10,345 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:10,352 INFO L496 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:10,667 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2019-11-07 02:10:10,668 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:10,676 INFO L496 ElimStorePlain]: Start of recursive call 10: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:10,889 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2019-11-07 02:10:10,890 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:10,905 INFO L496 ElimStorePlain]: Start of recursive call 11: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:11,031 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-11-07 02:10:11,032 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,039 INFO L496 ElimStorePlain]: Start of recursive call 12: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:11,151 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-11-07 02:10:11,151 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,157 INFO L496 ElimStorePlain]: Start of recursive call 13: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 02:10:11,240 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,288 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,288 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 177 treesize of output 184 [2019-11-07 02:10:11,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:10:11,290 INFO L496 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:11,350 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,372 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,373 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 140 treesize of output 147 [2019-11-07 02:10:11,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:10:11,375 INFO L496 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:11,407 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,409 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 16 dim-2 vars, End of recursive call: 11 dim-0 vars, and 2 xjuncts. [2019-11-07 02:10:11,410 INFO L221 ElimStorePlain]: Needed 15 recursive calls to eliminate 21 variables, input treesize:390, output treesize:149 [2019-11-07 02:10:11,488 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 02:10:11,488 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 02:10:11,490 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 02:10:11,494 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_42| vanished before elimination [2019-11-07 02:10:11,494 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 02:10:11,494 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:55, output treesize:1 [2019-11-07 02:10:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 02:10:11,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [973544348] [2019-11-07 02:10:11,544 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-11-07 02:10:11,544 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:10:11,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:10:11,563 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:10:11,564 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 02:10:11,703 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs