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/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:12:52,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:12:52,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:12:52,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:12:52,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:12:52,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:12:52,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:12:52,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:12:52,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:12:52,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:12:52,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:12:52,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:12:52,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:12:52,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:12:52,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:12:52,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:12:52,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:12:52,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:12:52,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:12:52,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:12:52,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:12:52,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:12:52,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:12:52,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:12:52,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:12:52,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:12:52,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:12:52,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:12:52,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:12:52,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:12:52,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:12:52,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:12:52,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:12:52,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:12:52,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:12:52,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:12:52,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:12:52,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:12:52,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:12:52,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:12:52,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:12:52,097 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 [2019-10-14 23:12:52,116 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:12:52,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:12:52,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:12:52,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:12:52,120 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:12:52,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:12:52,121 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:12:52,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:12:52,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:12:52,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:12:52,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:12:52,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:12:52,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:12:52,122 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:12:52,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:12:52,123 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:12:52,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:12:52,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:12:52,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:12:52,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:12:52,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:12:52,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:52,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:12:52,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:12:52,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:12:52,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:12:52,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:12:52,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:12:52,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:12:52,394 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:12:52,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:12:52,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:12:52,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:12:52,413 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:12:52,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-14 23:12:52,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fa161cd/176d77e481554a67aba2752893df3196/FLAG9fd541624 [2019-10-14 23:12:53,049 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:12:53,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-14 23:12:53,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fa161cd/176d77e481554a67aba2752893df3196/FLAG9fd541624 [2019-10-14 23:12:53,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fa161cd/176d77e481554a67aba2752893df3196 [2019-10-14 23:12:53,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:12:53,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:12:53,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:53,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:12:53,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:12:53,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:53" (1/1) ... [2019-10-14 23:12:53,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea49d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:53, skipping insertion in model container [2019-10-14 23:12:53,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:53" (1/1) ... [2019-10-14 23:12:53,315 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:12:53,370 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:12:53,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:53,892 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:12:53,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:54,002 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:12:54,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54 WrapperNode [2019-10-14 23:12:54,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:54,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:12:54,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:12:54,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:12:54,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (1/1) ... [2019-10-14 23:12:54,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:12:54,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:12:54,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:12:54,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:12:54,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (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 [2019-10-14 23:12:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:12:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:12:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:12:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:12:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:12:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:12:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-14 23:12:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-14 23:12:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-14 23:12:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:12:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:12:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:12:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:12:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:12:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:12:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:12:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:12:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:12:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:12:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:12:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:12:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:12:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:12:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:12:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:12:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:12:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:12:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:12:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:12:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:12:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:12:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:12:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:12:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:12:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:12:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:12:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:12:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:12:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:12:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:12:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:12:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:12:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:12:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:12:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:12:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:12:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:12:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:12:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:12:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:12:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:12:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:12:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:12:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:12:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:12:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:12:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:12:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:12:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:12:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:12:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:12:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:12:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:12:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:12:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:12:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:12:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:12:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:12:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:12:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:12:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:12:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:12:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:12:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:12:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:12:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:12:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:12:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:12:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:12:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-14 23:12:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-14 23:12:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:12:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:12:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:12:54,540 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:12:54,764 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:12:54,765 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:12:54,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:54 BoogieIcfgContainer [2019-10-14 23:12:54,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:12:54,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:12:54,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:12:54,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:12:54,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:12:53" (1/3) ... [2019-10-14 23:12:54,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1a4dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:54, skipping insertion in model container [2019-10-14 23:12:54,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:54" (2/3) ... [2019-10-14 23:12:54,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1a4dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:54, skipping insertion in model container [2019-10-14 23:12:54,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:54" (3/3) ... [2019-10-14 23:12:54,790 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-10-14 23:12:54,802 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:12:54,811 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:12:54,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:12:54,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:12:54,850 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:12:54,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:12:54,850 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:12:54,850 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:12:54,850 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:12:54,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:12:54,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:12:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-10-14 23:12:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:12:54,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:54,878 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:54,880 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1667158038, now seen corresponding path program 1 times [2019-10-14 23:12:54,894 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:54,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173436240] [2019-10-14 23:12:54,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:54,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:54,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:55,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173436240] [2019-10-14 23:12:55,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:55,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:12:55,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144148555] [2019-10-14 23:12:55,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:12:55,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:55,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:12:55,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:12:55,287 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2019-10-14 23:12:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:55,558 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2019-10-14 23:12:55,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:12:55,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-14 23:12:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:55,571 INFO L225 Difference]: With dead ends: 96 [2019-10-14 23:12:55,572 INFO L226 Difference]: Without dead ends: 42 [2019-10-14 23:12:55,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:12:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-14 23:12:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2019-10-14 23:12:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-14 23:12:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-10-14 23:12:55,626 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-10-14 23:12:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:55,627 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-10-14 23:12:55,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:12:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-10-14 23:12:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:12:55,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:55,630 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:55,630 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash 937001954, now seen corresponding path program 1 times [2019-10-14 23:12:55,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:55,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138584673] [2019-10-14 23:12:55,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:55,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:55,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:55,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138584673] [2019-10-14 23:12:55,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:55,857 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:55,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556616281] [2019-10-14 23:12:55,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:55,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:55,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:55,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:55,862 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 7 states. [2019-10-14 23:12:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:56,065 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2019-10-14 23:12:56,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:56,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-14 23:12:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:56,067 INFO L225 Difference]: With dead ends: 66 [2019-10-14 23:12:56,067 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 23:12:56,068 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 23:12:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-10-14 23:12:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 23:12:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-10-14 23:12:56,078 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-10-14 23:12:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:56,078 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-10-14 23:12:56,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-10-14 23:12:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:12:56,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:56,080 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, 1, 1] [2019-10-14 23:12:56,080 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:56,081 INFO L82 PathProgramCache]: Analyzing trace with hash -496897929, now seen corresponding path program 1 times [2019-10-14 23:12:56,081 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:56,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717976975] [2019-10-14 23:12:56,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:56,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:56,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:12:56,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717976975] [2019-10-14 23:12:56,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173669308] [2019-10-14 23:12:56,331 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 [2019-10-14 23:12:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:12:56,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:12:56,669 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:56,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-14 23:12:56,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193621211] [2019-10-14 23:12:56,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:12:56,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:12:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:12:56,672 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2019-10-14 23:12:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:56,957 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-10-14 23:12:56,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:12:56,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-10-14 23:12:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:56,959 INFO L225 Difference]: With dead ends: 70 [2019-10-14 23:12:56,959 INFO L226 Difference]: Without dead ends: 45 [2019-10-14 23:12:56,960 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:12:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-14 23:12:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-10-14 23:12:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:12:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-14 23:12:56,968 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 38 [2019-10-14 23:12:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:56,969 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-14 23:12:56,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:12:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-14 23:12:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:12:56,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:56,970 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2019-10-14 23:12:57,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:12:57,176 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:57,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1152263294, now seen corresponding path program 2 times [2019-10-14 23:12:57,177 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:57,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688093681] [2019-10-14 23:12:57,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:57,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:57,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:12:57,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688093681] [2019-10-14 23:12:57,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:57,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:12:57,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516975709] [2019-10-14 23:12:57,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:12:57,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:57,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:12:57,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:12:57,589 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 14 states. [2019-10-14 23:12:58,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:58,278 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2019-10-14 23:12:58,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:12:58,278 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2019-10-14 23:12:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:58,280 INFO L225 Difference]: With dead ends: 57 [2019-10-14 23:12:58,280 INFO L226 Difference]: Without dead ends: 55 [2019-10-14 23:12:58,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:12:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-14 23:12:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2019-10-14 23:12:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-14 23:12:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-10-14 23:12:58,298 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 47 [2019-10-14 23:12:58,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:58,300 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2019-10-14 23:12:58,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 23:12:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2019-10-14 23:12:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:12:58,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:58,305 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 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] [2019-10-14 23:12:58,305 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:58,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:58,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1152264968, now seen corresponding path program 1 times [2019-10-14 23:12:58,306 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:58,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225246904] [2019-10-14 23:12:58,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:12:58,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225246904] [2019-10-14 23:12:58,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:58,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:12:58,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426216618] [2019-10-14 23:12:58,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:12:58,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:58,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:12:58,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:12:58,537 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 12 states. [2019-10-14 23:12:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:58,819 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2019-10-14 23:12:58,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:12:58,820 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2019-10-14 23:12:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:58,821 INFO L225 Difference]: With dead ends: 55 [2019-10-14 23:12:58,821 INFO L226 Difference]: Without dead ends: 52 [2019-10-14 23:12:58,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:12:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-14 23:12:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-10-14 23:12:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-14 23:12:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2019-10-14 23:12:58,838 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 47 [2019-10-14 23:12:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:58,838 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-10-14 23:12:58,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:12:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2019-10-14 23:12:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:12:58,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:58,840 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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] [2019-10-14 23:12:58,840 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 776583197, now seen corresponding path program 1 times [2019-10-14 23:12:58,841 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:58,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597529429] [2019-10-14 23:12:58,841 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,841 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:58,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:12:59,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597529429] [2019-10-14 23:12:59,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948504204] [2019-10-14 23:12:59,244 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 [2019-10-14 23:12:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:59,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-14 23:12:59,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:59,524 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 [2019-10-14 23:12:59,524 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:59,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:59,530 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:12:59,530 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:13:01,612 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true