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/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:59:39,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:59:39,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:59:39,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:59:39,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:59:39,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:59:39,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:59:39,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:59:39,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:59:39,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:59:39,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:59:39,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:59:39,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:59:39,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:59:39,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:59:39,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:59:39,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:59:39,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:59:39,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:59:39,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:59:39,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:59:39,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:59:39,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:59:39,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:59:39,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:59:39,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:59:39,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:59:39,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:59:39,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:59:39,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:59:39,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:59:39,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:59:39,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:59:39,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:59:39,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:59:39,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:59:39,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:59:39,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:59:39,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:59:39,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:59:39,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:59:39,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:59:39,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:59:39,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:59:39,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:59:39,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:59:39,914 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:59:39,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:59:39,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:59:39,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:59:39,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:59:39,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:59:39,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:59:39,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:59:39,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:59:39,917 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:59:39,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:59:39,917 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:59:39,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:59:39,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:59:39,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:59:39,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:59:39,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:59:39,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:39,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:59:39,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:59:39,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:59:39,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:59:39,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:59:39,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:59:39,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:59:40,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:59:40,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:59:40,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:59:40,250 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:59:40,251 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:59:40,252 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-10-15 02:59:40,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d3c254d/3e5ff2c431f9458187e03a26cb8badb8/FLAGe63e18a32 [2019-10-15 02:59:40,854 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:59:40,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-10-15 02:59:40,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d3c254d/3e5ff2c431f9458187e03a26cb8badb8/FLAGe63e18a32 [2019-10-15 02:59:41,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5d3c254d/3e5ff2c431f9458187e03a26cb8badb8 [2019-10-15 02:59:41,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:59:41,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:59:41,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:41,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:59:41,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:59:41,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320bbd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41, skipping insertion in model container [2019-10-15 02:59:41,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,157 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:59:41,211 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:59:41,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:41,657 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:59:41,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:59:41,793 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:59:41,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41 WrapperNode [2019-10-15 02:59:41,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:59:41,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:59:41,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:59:41,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:59:41,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... [2019-10-15 02:59:41,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:59:41,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:59:41,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:59:41,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:59:41,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:59:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:59:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:59:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:59:41,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:59:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:59:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 02:59:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-15 02:59:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2019-10-15 02:59:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:59:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:59:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:59:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:59:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:59:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:59:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:59:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:59:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:59:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:59:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:59:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:59:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:59:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:59:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:59:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:59:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:59:41,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:59:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:59:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:59:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:59:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:59:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:59:41,945 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:59:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:59:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:59:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:59:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:59:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:59:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:59:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:59:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:59:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:59:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:59:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:59:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:59:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:59:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:59:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:59:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:59:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:59:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:59:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:59:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:59:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:59:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:59:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:59:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:59:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:59:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:59:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:59:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:59:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:59:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:59:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:59:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:59:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:59:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:59:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:59:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:59:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:59:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:59:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:59:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:59:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:59:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:59:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:59:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:59:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:59:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:59:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:59:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:59:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:59:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:59:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:59:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:59:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-15 02:59:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2019-10-15 02:59:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:59:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:59:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:59:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:59:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:59:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:59:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:59:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:59:42,353 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:59:42,709 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:59:42,709 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 02:59:42,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:42 BoogieIcfgContainer [2019-10-15 02:59:42,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:59:42,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:59:42,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:59:42,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:59:42,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:59:41" (1/3) ... [2019-10-15 02:59:42,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff02145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:42, skipping insertion in model container [2019-10-15 02:59:42,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:59:41" (2/3) ... [2019-10-15 02:59:42,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff02145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:59:42, skipping insertion in model container [2019-10-15 02:59:42,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:59:42" (3/3) ... [2019-10-15 02:59:42,720 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2019-10-15 02:59:42,730 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:59:42,739 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:59:42,751 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:59:42,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:59:42,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:59:42,775 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:59:42,776 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:59:42,776 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:59:42,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:59:42,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:59:42,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:59:42,795 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-15 02:59:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 02:59:42,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:42,803 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:42,804 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:42,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1479405395, now seen corresponding path program 1 times [2019-10-15 02:59:42,819 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:42,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548967461] [2019-10-15 02:59:42,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:42,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:42,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:43,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548967461] [2019-10-15 02:59:43,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:59:43,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:59:43,036 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665349839] [2019-10-15 02:59:43,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:59:43,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:43,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:59:43,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:59:43,084 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2019-10-15 02:59:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:43,170 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-10-15 02:59:43,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:59:43,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-15 02:59:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:43,184 INFO L225 Difference]: With dead ends: 37 [2019-10-15 02:59:43,184 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 02:59:43,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:59:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 02:59:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-10-15 02:59:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 02:59:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-15 02:59:43,244 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2019-10-15 02:59:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:43,245 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-15 02:59:43,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:59:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-15 02:59:43,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 02:59:43,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:43,246 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:43,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:43,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash 770211098, now seen corresponding path program 1 times [2019-10-15 02:59:43,248 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:43,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484294344] [2019-10-15 02:59:43,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:43,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:43,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:43,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484294344] [2019-10-15 02:59:43,448 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401404002] [2019-10-15 02:59:43,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:43,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 02:59:43,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:59:43,620 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:59:43,717 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:59:43,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 10 [2019-10-15 02:59:43,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332560893] [2019-10-15 02:59:43,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 02:59:43,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:43,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 02:59:43,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 02:59:43,721 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2019-10-15 02:59:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:43,799 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-10-15 02:59:43,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:59:43,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-10-15 02:59:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:43,801 INFO L225 Difference]: With dead ends: 35 [2019-10-15 02:59:43,801 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 02:59:43,803 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-15 02:59:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 02:59:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-10-15 02:59:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 02:59:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-10-15 02:59:43,814 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2019-10-15 02:59:43,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:43,815 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-10-15 02:59:43,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 02:59:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-10-15 02:59:43,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 02:59:43,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:43,817 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:44,021 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:44,021 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2026037520, now seen corresponding path program 1 times [2019-10-15 02:59:44,022 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:44,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179775987] [2019-10-15 02:59:44,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:44,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:44,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:44,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179775987] [2019-10-15 02:59:44,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050343274] [2019-10-15 02:59:44,176 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 [2019-10-15 02:59:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:44,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:59:44,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:44,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:59:44,310 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:59:44,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [942569259] [2019-10-15 02:59:44,431 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-15 02:59:44,431 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:44,437 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:44,446 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:44,446 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:44,644 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:59:44,868 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:45,209 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:45,587 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:46,049 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:46,075 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:46,086 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:46,096 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:47,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:47,449 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:275) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:263) 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:237) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:216) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 02:59:47,455 INFO L168 Benchmark]: Toolchain (without parser) took 6313.79 ms. Allocated memory was 145.8 MB in the beginning and 285.2 MB in the end (delta: 139.5 MB). Free memory was 102.5 MB in the beginning and 193.8 MB in the end (delta: -91.3 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:47,456 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 02:59:47,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.94 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 169.2 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:47,457 INFO L168 Benchmark]: Boogie Preprocessor took 81.77 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 165.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:47,458 INFO L168 Benchmark]: RCFGBuilder took 833.93 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 108.5 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2019-10-15 02:59:47,459 INFO L168 Benchmark]: TraceAbstraction took 4741.10 ms. Allocated memory was 203.4 MB in the beginning and 285.2 MB in the end (delta: 81.8 MB). Free memory was 108.5 MB in the beginning and 193.8 MB in the end (delta: -85.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 02:59:47,465 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.94 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.3 MB in the beginning and 169.2 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.77 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 165.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 833.93 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 108.5 MB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4741.10 ms. Allocated memory was 203.4 MB in the beginning and 285.2 MB in the end (delta: 81.8 MB). Free memory was 108.5 MB in the beginning and 193.8 MB in the end (delta: -85.3 MB). There was no memory consumed. 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.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...