java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:56:11,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:56:11,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:56:11,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:56:11,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:56:11,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:56:11,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:56:11,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:56:11,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:56:11,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:56:11,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:56:11,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:56:11,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:56:11,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:56:11,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:56:11,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:56:11,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:56:11,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:56:11,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:56:11,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:56:11,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:56:11,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:56:11,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:56:11,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:56:11,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:56:11,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:56:11,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:56:11,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:56:11,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:56:11,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:56:11,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:56:11,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:56:11,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:56:11,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:56:11,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:56:11,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:56:11,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:56:11,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:56:11,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:56:11,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:56:11,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:56:11,928 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 22:56:11,946 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:56:11,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:56:11,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:56:11,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:56:11,949 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:56:11,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:56:11,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:56:11,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:56:11,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:56:11,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:56:11,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:56:11,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:56:11,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:56:11,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:56:11,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:56:11,952 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:56:11,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:56:11,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:56:11,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:56:11,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:56:11,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:56:11,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:56:11,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:56:11,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:56:11,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:56:11,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:56:11,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:56:11,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:56:11,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:56:12,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:56:12,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:56:12,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:56:12,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:56:12,267 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:56:12,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2019-10-13 22:56:12,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb3b149/6a50a911efe545de88225ea186edbaa5/FLAG2eea5bae7 [2019-10-13 22:56:12,841 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:56:12,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2019-10-13 22:56:12,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb3b149/6a50a911efe545de88225ea186edbaa5/FLAG2eea5bae7 [2019-10-13 22:56:13,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbb3b149/6a50a911efe545de88225ea186edbaa5 [2019-10-13 22:56:13,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:56:13,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:56:13,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:56:13,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:56:13,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:56:13,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728a91ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13, skipping insertion in model container [2019-10-13 22:56:13,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,163 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:56:13,208 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:56:13,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:56:13,692 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:56:13,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:56:13,833 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:56:13,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13 WrapperNode [2019-10-13 22:56:13,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:56:13,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:56:13,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:56:13,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:56:13,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (1/1) ... [2019-10-13 22:56:13,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:56:13,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:56:13,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:56:13,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:56:13,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (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 22:56:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:56:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:56:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:56:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:56:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:56:13,956 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 22:56:13,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-10-13 22:56:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-10-13 22:56:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2019-10-13 22:56:13,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:56:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:56:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:56:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:56:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:56:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:56:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:56:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:56:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:56:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:56:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:56:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:56:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:56:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:56:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:56:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:56:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:56:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:56:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:56:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:56:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:56:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:56:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:56:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:56:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:56:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:56:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:56:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:56:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:56:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:56:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:56:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:56:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:56:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:56:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:56:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:56:13,970 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:56:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:56:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:56:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:56:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:56:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:56:13,971 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:56:13,972 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:56:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:56:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:56:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 22:56:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:56:13,977 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2019-10-13 22:56:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:56:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:56:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:56:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:56:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:56:13,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:56:14,476 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:56:15,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:56:15,124 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 22:56:15,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:56:15 BoogieIcfgContainer [2019-10-13 22:56:15,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:56:15,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:56:15,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:56:15,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:56:15,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:56:13" (1/3) ... [2019-10-13 22:56:15,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcfa427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:56:15, skipping insertion in model container [2019-10-13 22:56:15,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:56:13" (2/3) ... [2019-10-13 22:56:15,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dcfa427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:56:15, skipping insertion in model container [2019-10-13 22:56:15,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:56:15" (3/3) ... [2019-10-13 22:56:15,135 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2019-10-13 22:56:15,145 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:56:15,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:56:15,165 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:56:15,198 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:56:15,198 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:56:15,199 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:56:15,199 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:56:15,199 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:56:15,199 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:56:15,200 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:56:15,200 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:56:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-13 22:56:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 22:56:15,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:15,225 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:15,227 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1888948319, now seen corresponding path program 1 times [2019-10-13 22:56:15,241 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:15,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139648766] [2019-10-13 22:56:15,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:15,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:15,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:56:15,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139648766] [2019-10-13 22:56:15,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:15,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 22:56:15,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434265278] [2019-10-13 22:56:15,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 22:56:15,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:15,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 22:56:15,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:56:15,551 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-10-13 22:56:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:15,575 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2019-10-13 22:56:15,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 22:56:15,577 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-10-13 22:56:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:15,586 INFO L225 Difference]: With dead ends: 58 [2019-10-13 22:56:15,586 INFO L226 Difference]: Without dead ends: 30 [2019-10-13 22:56:15,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:56:15,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-13 22:56:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-13 22:56:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 22:56:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-13 22:56:15,640 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 29 [2019-10-13 22:56:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:15,642 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-13 22:56:15,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 22:56:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-13 22:56:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 22:56:15,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:15,645 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:15,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1888934400, now seen corresponding path program 1 times [2019-10-13 22:56:15,646 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:15,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233379656] [2019-10-13 22:56:15,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:15,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:15,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 22:56:15,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233379656] [2019-10-13 22:56:15,840 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:56:15,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:56:15,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571726644] [2019-10-13 22:56:15,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:56:15,842 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:56:15,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:56:15,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:56:15,843 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2019-10-13 22:56:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:56:15,934 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-10-13 22:56:15,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:56:15,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-13 22:56:15,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:56:15,937 INFO L225 Difference]: With dead ends: 51 [2019-10-13 22:56:15,937 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 22:56:15,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:56:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 22:56:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2019-10-13 22:56:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 22:56:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-13 22:56:15,954 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 29 [2019-10-13 22:56:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:56:15,954 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-13 22:56:15,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:56:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-13 22:56:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-13 22:56:15,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:56:15,957 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:56:15,957 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:56:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:56:15,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1136965430, now seen corresponding path program 1 times [2019-10-13 22:56:15,958 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:56:15,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348069754] [2019-10-13 22:56:15,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:15,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:56:15,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:56:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:17,752 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-10-13 22:56:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:56:18,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348069754] [2019-10-13 22:56:18,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521243170] [2019-10-13 22:56:18,045 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 22:56:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:56:18,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 113 conjunts are in the unsatisfiable core [2019-10-13 22:56:18,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:56:18,359 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 [2019-10-13 22:56:18,359 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,364 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:18,365 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,365 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-10-13 22:56:18,468 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-10-13 22:56:18,469 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,473 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:18,474 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,474 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:3 [2019-10-13 22:56:18,677 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:18,678 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-10-13 22:56:18,680 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,716 INFO L567 ElimStorePlain]: treesize reduction 14, result has 65.0 percent of original size [2019-10-13 22:56:18,717 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,717 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:26 [2019-10-13 22:56:18,772 INFO L341 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2019-10-13 22:56:18,773 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 1 case distinctions, treesize of input 29 treesize of output 17 [2019-10-13 22:56:18,774 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:18,790 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:18,792 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 22:56:18,792 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:57, output treesize:53 [2019-10-13 22:56:19,107 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:19,108 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 23 treesize of output 27 [2019-10-13 22:56:19,109 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:19,128 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:19,130 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 4=[|v_#memory_$Pointer$.base_BEFORE_CALL_1|]} [2019-10-13 22:56:19,135 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 22:56:19,135 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:19,157 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:19,177 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:19,177 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2019-10-13 22:56:19,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:56:19,182 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:19,190 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:19,191 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:56:19,191 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:91, output treesize:10 [2019-10-13 22:56:19,312 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 [2019-10-13 22:56:19,312 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 22:56:19,329 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:19,330 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 22:56:19,330 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:72 [2019-10-13 22:56:19,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:56:19,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:56:19,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:56:19,652 INFO L392 ElimStorePlain]: Different costs {2=[|v_#memory_int_120|, |v_#memory_int_121|, |v_#memory_int_122|, |v_#memory_int_123|, |v_#memory_int_124|, |v_#memory_int_125|, v_prenex_1, |v_#memory_int_119|], 14=[v_prenex_2, v_prenex_3], 36=[|v_#memory_$Pointer$.offset_75|, |v_#memory_$Pointer$.base_76|]} [2019-10-13 22:56:19,733 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 22:56:20,468 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 22:56:29,974 WARN L191 SmtUtils]: Spent 9.51 s on a formula simplification that was a NOOP. DAG size: 180 [2019-10-13 22:56:29,975 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:30,257 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 22:56:30,681 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 22:56:41,929 WARN L191 SmtUtils]: Spent 11.25 s on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 22:56:41,929 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:42,116 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 22:56:58,584 WARN L191 SmtUtils]: Spent 16.47 s on a formula simplification that was a NOOP. DAG size: 180 [2019-10-13 22:56:58,584 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 22:56:58,783 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.