/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/list-simple/sll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 03:57:53,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:57:53,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:57:53,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:57:53,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:57:53,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:57:53,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:57:53,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:57:53,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:57:53,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:57:53,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:57:53,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:57:53,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:57:53,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:57:53,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:57:53,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:57:53,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:57:53,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:57:53,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:57:53,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:57:53,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:57:53,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:57:53,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:57:53,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:57:53,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:57:53,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:57:53,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:57:53,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:57:53,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:57:53,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:57:53,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:57:53,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:57:53,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:57:53,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:57:53,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:57:53,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:57:53,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:57:53,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:57:53,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:57:53,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:57:53,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:57:53,928 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 [2019-11-07 03:57:53,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:57:53,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:57:53,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:57:53,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:57:53,953 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:57:53,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:57:53,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:57:53,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:57:53,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:57:53,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:57:53,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:57:53,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:57:53,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:57:53,956 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:57:53,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:57:53,957 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:57:53,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:57:53,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:57:53,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:57:53,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:57:53,958 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:57:53,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:57:53,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:57:53,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:57:53,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:57:53,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:57:53,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:57:53,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:57:53,959 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 03:57:54,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:57:54,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:57:54,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:57:54,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:57:54,280 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:57:54,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2019-11-07 03:57:54,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b627ba65b/d58b37e7311e4c1eb5b30b25b09b1fd7/FLAGc7cec12c4 [2019-11-07 03:57:54,946 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:57:54,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2019-11-07 03:57:54,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b627ba65b/d58b37e7311e4c1eb5b30b25b09b1fd7/FLAGc7cec12c4 [2019-11-07 03:57:55,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b627ba65b/d58b37e7311e4c1eb5b30b25b09b1fd7 [2019-11-07 03:57:55,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:57:55,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:57:55,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:57:55,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:57:55,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:57:55,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:55,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1983200d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55, skipping insertion in model container [2019-11-07 03:57:55,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:55,257 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:57:55,316 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:57:55,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:57:55,845 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:57:55,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:57:55,965 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:57:55,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55 WrapperNode [2019-11-07 03:57:55,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:57:55,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:57:55,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:57:55,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:57:55,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:55,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:55,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:56,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:56,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:56,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:56,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (1/1) ... [2019-11-07 03:57:56,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:57:56,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:57:56,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:57:56,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:57:56,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (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 03:57:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:57:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:57:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 03:57:56,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 03:57:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 03:57:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 03:57:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-07 03:57:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-07 03:57:56,116 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-11-07 03:57:56,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:57:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:57:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:57:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 03:57:56,117 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 03:57:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 03:57:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 03:57:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 03:57:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 03:57:56,118 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 03:57:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 03:57:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 03:57:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 03:57:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 03:57:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 03:57:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 03:57:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 03:57:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 03:57:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 03:57:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 03:57:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 03:57:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 03:57:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 03:57:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 03:57:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 03:57:56,123 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 03:57:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 03:57:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 03:57:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 03:57:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 03:57:56,124 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 03:57:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 03:57:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 03:57:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 03:57:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 03:57:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 03:57:56,125 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 03:57:56,126 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 03:57:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 03:57:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 03:57:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 03:57:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 03:57:56,127 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 03:57:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 03:57:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 03:57:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 03:57:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 03:57:56,128 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 03:57:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 03:57:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:57:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:57:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 03:57:56,129 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:57:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 03:57:56,130 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 03:57:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 03:57:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 03:57:56,131 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 03:57:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 03:57:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 03:57:56,132 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 03:57:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 03:57:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 03:57:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 03:57:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 03:57:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 03:57:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 03:57:56,137 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 03:57:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 03:57:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 03:57:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 03:57:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 03:57:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 03:57:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 03:57:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 03:57:56,140 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 03:57:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 03:57:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 03:57:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 03:57:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 03:57:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:57:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:57:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:57:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:57:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:57:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:57:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:57:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:57:56,543 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 03:57:56,922 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:57:56,922 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 03:57:56,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:56 BoogieIcfgContainer [2019-11-07 03:57:56,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:57:56,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:57:56,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:57:56,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:57:56,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:57:55" (1/3) ... [2019-11-07 03:57:56,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef368a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:56, skipping insertion in model container [2019-11-07 03:57:56,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:57:55" (2/3) ... [2019-11-07 03:57:56,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ef368a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:57:56, skipping insertion in model container [2019-11-07 03:57:56,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:57:56" (3/3) ... [2019-11-07 03:57:56,933 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2019-11-07 03:57:56,943 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:57:56,952 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:57:56,964 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:57:56,991 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:57:56,991 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:57:56,991 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:57:56,991 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:57:56,991 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:57:56,992 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:57:56,992 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:57:56,992 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:57:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-11-07 03:57:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-07 03:57:57,019 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:57,020 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:57,022 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:57,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:57,027 INFO L82 PathProgramCache]: Analyzing trace with hash -235980954, now seen corresponding path program 1 times [2019-11-07 03:57:57,037 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:57,038 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9236144] [2019-11-07 03:57:57,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:57,474 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 03:57:57,475 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9236144] [2019-11-07 03:57:57,476 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:57:57,476 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 03:57:57,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335971473] [2019-11-07 03:57:57,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 03:57:57,484 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:57:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 03:57:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-11-07 03:57:57,502 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2019-11-07 03:57:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:57:57,756 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2019-11-07 03:57:57,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 03:57:57,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-11-07 03:57:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:57:57,772 INFO L225 Difference]: With dead ends: 81 [2019-11-07 03:57:57,773 INFO L226 Difference]: Without dead ends: 36 [2019-11-07 03:57:57,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-07 03:57:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-07 03:57:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2019-11-07 03:57:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-07 03:57:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-11-07 03:57:57,823 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 24 [2019-11-07 03:57:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:57:57,824 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-11-07 03:57:57,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 03:57:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-11-07 03:57:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-07 03:57:57,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:57:57,826 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:57:57,827 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:57:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:57:57,827 INFO L82 PathProgramCache]: Analyzing trace with hash -915082025, now seen corresponding path program 1 times [2019-11-07 03:57:57,828 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:57:57,828 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408661589] [2019-11-07 03:57:57,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:57:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 03:57:58,053 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408661589] [2019-11-07 03:57:58,053 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145240620] [2019-11-07 03:57:58,053 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 03:57:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:57:58,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 03:57:58,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:57:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 03:57:58,250 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:57:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 03:57:58,462 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [650780821] [2019-11-07 03:57:58,487 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2019-11-07 03:57:58,488 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:57:58,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:57:58,501 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:57:58,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:57:58,623 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 03:57:58,821 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-11-07 03:58:00,033 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2019-11-07 03:58:00,053 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,058 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,062 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,075 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,080 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,085 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,123 INFO L197 IcfgInterpreter]: Interpreting procedure sll_insert with input of size 39 for LOIs [2019-11-07 03:58:00,244 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,261 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:00,266 INFO L197 IcfgInterpreter]: Interpreting procedure sll_create with input of size 44 for LOIs [2019-11-07 03:58:03,155 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 71 for LOIs [2019-11-07 03:58:03,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-11-07 03:58:03,244 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 03:58:08,142 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2019-11-07 03:58:08,512 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2019-11-07 03:58:08,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 03:58:08,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [10, 6, 6] total 31 [2019-11-07 03:58:08,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690305350] [2019-11-07 03:58:08,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 03:58:08,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:58:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 03:58:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=842, Unknown=1, NotChecked=0, Total=930 [2019-11-07 03:58:08,518 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 21 states. [2019-11-07 03:58:17,938 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 171 [2019-11-07 03:58:20,987 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 128 [2019-11-07 03:58:21,162 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2019-11-07 03:58:21,831 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-11-07 03:58:22,373 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-11-07 03:58:22,626 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2019-11-07 03:58:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:58:22,993 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2019-11-07 03:58:22,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 03:58:22,997 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 31 [2019-11-07 03:58:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:58:22,999 INFO L225 Difference]: With dead ends: 44 [2019-11-07 03:58:22,999 INFO L226 Difference]: Without dead ends: 34 [2019-11-07 03:58:23,001 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=195, Invalid=1962, Unknown=5, NotChecked=0, Total=2162 [2019-11-07 03:58:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-07 03:58:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-11-07 03:58:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-07 03:58:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-11-07 03:58:23,011 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 31 [2019-11-07 03:58:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:58:23,012 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-11-07 03:58:23,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 03:58:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-11-07 03:58:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 03:58:23,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:58:23,014 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:58:23,214 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:58:23,215 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:58:23,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:58:23,216 INFO L82 PathProgramCache]: Analyzing trace with hash -565859480, now seen corresponding path program 1 times [2019-11-07 03:58:23,216 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:58:23,216 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270105444] [2019-11-07 03:58:23,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:58:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:58:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:58:23,380 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270105444] [2019-11-07 03:58:23,381 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752038315] [2019-11-07 03:58:23,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:58:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:58:23,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 03:58:23,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:58:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 03:58:23,543 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:58:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 03:58:23,630 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591790179] [2019-11-07 03:58:23,632 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2019-11-07 03:58:23,632 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 03:58:23,633 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 03:58:23,633 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 03:58:23,633 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 03:58:23,659 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 03:58:23,729 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:24,717 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:24,721 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:24,746 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:24,749 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:24,799 INFO L197 IcfgInterpreter]: Interpreting procedure sll_insert with input of size 37 for LOIs [2019-11-07 03:58:25,060 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 03:58:25,902 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-07 03:58:26,216 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:58:26,217 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:178) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:146) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:294) ... 21 more [2019-11-07 03:58:26,223 INFO L168 Benchmark]: Toolchain (without parser) took 30981.00 ms. Allocated memory was 146.3 MB in the beginning and 448.8 MB in the end (delta: 302.5 MB). Free memory was 101.3 MB in the beginning and 379.8 MB in the end (delta: -278.5 MB). Peak memory consumption was 277.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:58:26,224 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 03:58:26,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.05 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 167.7 MB in the end (delta: -66.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-11-07 03:58:26,225 INFO L168 Benchmark]: Boogie Preprocessor took 80.32 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 164.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-11-07 03:58:26,225 INFO L168 Benchmark]: RCFGBuilder took 877.52 ms. Allocated memory is still 204.5 MB. Free memory was 164.0 MB in the beginning and 102.9 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2019-11-07 03:58:26,226 INFO L168 Benchmark]: TraceAbstraction took 29296.00 ms. Allocated memory was 204.5 MB in the beginning and 448.8 MB in the end (delta: 244.3 MB). Free memory was 102.9 MB in the beginning and 379.8 MB in the end (delta: -276.9 MB). Peak memory consumption was 220.9 MB. Max. memory is 7.1 GB. [2019-11-07 03:58:26,228 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.05 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 100.9 MB in the beginning and 167.7 MB in the end (delta: -66.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.32 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 164.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 877.52 ms. Allocated memory is still 204.5 MB. Free memory was 164.0 MB in the beginning and 102.9 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29296.00 ms. Allocated memory was 204.5 MB in the beginning and 448.8 MB in the end (delta: 244.3 MB). Free memory was 102.9 MB in the beginning and 379.8 MB in the end (delta: -276.9 MB). Peak memory consumption was 220.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...