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 -i ../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:13:38,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:13:38,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:13:38,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:13:38,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:13:38,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:13:38,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:13:38,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:13:38,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:13:38,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:13:38,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:13:38,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:13:38,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:13:38,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:13:38,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:13:38,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:13:38,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:13:38,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:13:38,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:13:38,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:13:38,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:13:38,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:13:38,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:13:38,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:13:38,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:13:38,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:13:38,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:13:38,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:13:38,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:13:38,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:13:38,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:13:38,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:13:38,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:13:38,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:13:38,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:13:38,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:13:38,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:13:38,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:13:38,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:13:38,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:13:38,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:13:38,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:13:38,975 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:13:38,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:13:38,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:13:38,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:13:38,978 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:13:38,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:13:38,979 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:13:38,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:13:38,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:13:38,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:13:38,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:13:38,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:13:38,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:13:38,982 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:13:38,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:13:38,982 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:13:38,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:13:38,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:13:38,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:13:38,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:13:38,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:13:38,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:13:38,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:13:38,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:13:38,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:13:38,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:13:38,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:13:38,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:13:38,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:13:39,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:13:39,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:13:39,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:13:39,275 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:13:39,275 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:13:39,276 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-10-13 19:13:39,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea363de20/f77c6cec4d614834bc3544a5fe962a29/FLAG4901e162f [2019-10-13 19:13:39,919 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:13:39,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-10-13 19:13:39,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea363de20/f77c6cec4d614834bc3544a5fe962a29/FLAG4901e162f [2019-10-13 19:13:40,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea363de20/f77c6cec4d614834bc3544a5fe962a29 [2019-10-13 19:13:40,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:13:40,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:13:40,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:13:40,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:13:40,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:13:40,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7ba798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40, skipping insertion in model container [2019-10-13 19:13:40,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,257 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:13:40,300 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:13:40,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:13:40,741 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:13:40,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:13:40,850 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:13:40,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40 WrapperNode [2019-10-13 19:13:40,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:13:40,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:13:40,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:13:40,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:13:40,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... [2019-10-13 19:13:40,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:13:40,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:13:40,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:13:40,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:13:40,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:13:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:13:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:13:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 19:13:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 19:13:40,967 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 19:13:40,968 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-13 19:13:40,968 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-13 19:13:40,968 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-13 19:13:40,969 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-10-13 19:13:40,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:13:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:13:40,969 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 19:13:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 19:13:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 19:13:40,971 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 19:13:40,971 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 19:13:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 19:13:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 19:13:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 19:13:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 19:13:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 19:13:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 19:13:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 19:13:40,975 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 19:13:40,976 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 19:13:40,977 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 19:13:40,978 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 19:13:40,979 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 19:13:40,979 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 19:13:40,979 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 19:13:40,979 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 19:13:40,979 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 19:13:40,979 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:13:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:13:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 19:13:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:13:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 19:13:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 19:13:40,980 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 19:13:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 19:13:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 19:13:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 19:13:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 19:13:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 19:13:40,981 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 19:13:40,982 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 19:13:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 19:13:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 19:13:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 19:13:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 19:13:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 19:13:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 19:13:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 19:13:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 19:13:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 19:13:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 19:13:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 19:13:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 19:13:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 19:13:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 19:13:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 19:13:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 19:13:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-13 19:13:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:13:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:13:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:13:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:13:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:13:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:13:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:13:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:13:41,369 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 19:13:41,612 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:13:41,613 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:13:41,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:41 BoogieIcfgContainer [2019-10-13 19:13:41,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:13:41,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:13:41,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:13:41,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:13:41,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:13:40" (1/3) ... [2019-10-13 19:13:41,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d74018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:41, skipping insertion in model container [2019-10-13 19:13:41,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:13:40" (2/3) ... [2019-10-13 19:13:41,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d74018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:13:41, skipping insertion in model container [2019-10-13 19:13:41,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:13:41" (3/3) ... [2019-10-13 19:13:41,629 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2019-10-13 19:13:41,639 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:13:41,648 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:13:41,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:13:41,687 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:13:41,687 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:13:41,687 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:13:41,688 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:13:41,688 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:13:41,688 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:13:41,688 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:13:41,688 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:13:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-10-13 19:13:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-13 19:13:41,716 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:41,717 INFO L380 BasicCegarLoop]: trace histogram [2, 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, 1, 1] [2019-10-13 19:13:41,719 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:41,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1012713618, now seen corresponding path program 1 times [2019-10-13 19:13:41,731 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:41,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896834288] [2019-10-13 19:13:41,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:41,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:41,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 19:13:42,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896834288] [2019-10-13 19:13:42,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:42,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:13:42,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634464512] [2019-10-13 19:13:42,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:13:42,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:42,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:13:42,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:13:42,172 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2019-10-13 19:13:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:42,422 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2019-10-13 19:13:42,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:13:42,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-10-13 19:13:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:42,434 INFO L225 Difference]: With dead ends: 101 [2019-10-13 19:13:42,434 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 19:13:42,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:13:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 19:13:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-13 19:13:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 19:13:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-10-13 19:13:42,481 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2019-10-13 19:13:42,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:42,484 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-10-13 19:13:42,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:13:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-10-13 19:13:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-13 19:13:42,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:42,487 INFO L380 BasicCegarLoop]: trace histogram [2, 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, 1, 1] [2019-10-13 19:13:42,487 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1012699699, now seen corresponding path program 1 times [2019-10-13 19:13:42,488 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:42,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752765179] [2019-10-13 19:13:42,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:42,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:42,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 19:13:42,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752765179] [2019-10-13 19:13:42,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:13:42,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:13:42,750 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607972043] [2019-10-13 19:13:42,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:13:42,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:42,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:13:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:13:42,754 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2019-10-13 19:13:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:13:42,977 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-10-13 19:13:42,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:13:42,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2019-10-13 19:13:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:13:42,980 INFO L225 Difference]: With dead ends: 70 [2019-10-13 19:13:42,980 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 19:13:42,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:13:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 19:13:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-10-13 19:13:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 19:13:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-10-13 19:13:42,993 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2019-10-13 19:13:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:13:42,993 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-10-13 19:13:42,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:13:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2019-10-13 19:13:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-13 19:13:42,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:13:42,997 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:13:42,997 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:13:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:13:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1741397995, now seen corresponding path program 1 times [2019-10-13 19:13:42,998 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:13:42,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193002324] [2019-10-13 19:13:42,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:42,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:13:42,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:13:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:13:43,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193002324] [2019-10-13 19:13:43,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029152878] [2019-10-13 19:13:43,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:13:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:13:43,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-13 19:13:43,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:13:44,005 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-13 19:13:44,012 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:13:44,028 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:44,029 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:13:44,029 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-13 19:13:45,105 WARN L191 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-10-13 19:13:46,166 WARN L191 SmtUtils]: Spent 993.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-10-13 19:13:46,186 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 19:13:46,204 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:13:46,205 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-13 19:13:46,206 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-10-13 19:13:54,778 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-10-13 19:13:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:13:54,855 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:13:54,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2019-10-13 19:13:54,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693084857] [2019-10-13 19:13:54,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 19:13:54,858 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:13:54,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 19:13:54,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=575, Unknown=3, NotChecked=0, Total=650 [2019-10-13 19:13:54,861 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 26 states. [2019-10-13 19:13:56,445 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 29 [2019-10-13 19:14:01,693 WARN L191 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-10-13 19:14:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:14:05,620 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-10-13 19:14:05,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 19:14:05,620 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 44 [2019-10-13 19:14:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:14:05,622 INFO L225 Difference]: With dead ends: 53 [2019-10-13 19:14:05,622 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 19:14:05,623 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=128, Invalid=1059, Unknown=3, NotChecked=0, Total=1190 [2019-10-13 19:14:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 19:14:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-10-13 19:14:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 19:14:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-10-13 19:14:05,631 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 44 [2019-10-13 19:14:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:14:05,631 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-10-13 19:14:05,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 19:14:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-10-13 19:14:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:14:05,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:14:05,636 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:14:05,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:14:05,837 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:14:05,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:14:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1156352198, now seen corresponding path program 1 times [2019-10-13 19:14:05,838 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:14:05,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879624995] [2019-10-13 19:14:05,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:14:05,840 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:14:05,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:14:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:06,906 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-10-13 19:14:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:07,403 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-10-13 19:14:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:14:07,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879624995] [2019-10-13 19:14:07,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065415173] [2019-10-13 19:14:07,420 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 [2019-10-13 19:14:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:14:07,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 91 conjunts are in the unsatisfiable core [2019-10-13 19:14:07,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:14:07,627 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-13 19:14:07,627 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:14:07,629 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:07,629 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:14:07,629 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-13 19:14:07,793 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:07,793 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-13 19:14:07,794 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:14:07,800 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:07,801 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:14:07,801 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-10-13 19:14:07,854 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-13 19:14:07,854 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:14:07,862 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:07,863 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:14:07,863 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-10-13 19:14:07,951 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:07,951 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-10-13 19:14:07,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 19:14:07,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:14:07,956 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-13 19:14:07,991 INFO L567 ElimStorePlain]: treesize reduction 25, result has 49.0 percent of original size [2019-10-13 19:14:07,992 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 19:14:07,992 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2019-10-13 19:14:08,223 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-10-13 19:14:08,228 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-13 19:14:08,228 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:14:08,239 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:08,268 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:08,269 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 46 [2019-10-13 19:14:08,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:14:08,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:14:08,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:14:08,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:14:08,274 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-13 19:14:08,304 INFO L567 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2019-10-13 19:14:08,305 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:14:08,305 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:7 [2019-10-13 19:14:10,657 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) 4)))) (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= (store |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.offset| node_create_~temp~0.base) 4))) |c_#memory_$Pointer$.offset|) (not (= 0 node_create_~temp~0.base)))) is different from true [2019-10-13 19:14:27,122 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 36 [2019-10-13 19:14:27,134 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 19:14:27,158 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:14:27,159 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-13 19:14:27,159 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:59