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-fea9116 [2019-09-20 13:02:38,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:02:38,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:02:38,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:02:38,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:02:38,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:02:38,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:02:38,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:02:38,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:02:38,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:02:38,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:02:38,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:02:38,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:02:38,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:02:38,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:02:38,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:02:38,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:02:38,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:02:38,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:02:38,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:02:38,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:02:38,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:02:38,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:02:38,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:02:38,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:02:38,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:02:38,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:02:38,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:02:38,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:02:38,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:02:38,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:02:38,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:02:38,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:02:38,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:02:38,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:02:38,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:02:38,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:02:38,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:02:38,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:02:38,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:02:38,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:02:38,156 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 [2019-09-20 13:02:38,178 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:02:38,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:02:38,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:02:38,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:02:38,183 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:02:38,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:02:38,184 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:02:38,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:02:38,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:02:38,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:02:38,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:02:38,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:02:38,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:02:38,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:02:38,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:02:38,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:02:38,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:02:38,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:02:38,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:02:38,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:02:38,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:02:38,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:02:38,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:02:38,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:02:38,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:02:38,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:02:38,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:02:38,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:02:38,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:02:38,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:02:38,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:02:38,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:02:38,273 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:02:38,273 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:02:38,274 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-09-20 13:02:38,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc838557c/86dd58b3f6c64da6aebd9dc8f28aa57e/FLAG02a65d20f [2019-09-20 13:02:38,843 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:02:38,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-09-20 13:02:38,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc838557c/86dd58b3f6c64da6aebd9dc8f28aa57e/FLAG02a65d20f [2019-09-20 13:02:39,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc838557c/86dd58b3f6c64da6aebd9dc8f28aa57e [2019-09-20 13:02:39,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:02:39,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:02:39,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:39,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:02:39,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:02:39,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f2e4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39, skipping insertion in model container [2019-09-20 13:02:39,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,137 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:02:39,185 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:02:39,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:39,727 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:02:39,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:39,837 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:02:39,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39 WrapperNode [2019-09-20 13:02:39,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:39,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:02:39,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:02:39,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:02:39,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (1/1) ... [2019-09-20 13:02:39,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:02:39,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:02:39,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:02:39,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:02:39,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (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 [2019-09-20 13:02:40,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:02:40,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:02:40,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:02:40,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:02:40,002 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:02:40,003 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:02:40,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-20 13:02:40,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-09-20 13:02:40,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-09-20 13:02:40,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:02:40,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:02:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:02:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:02:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:02:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:02:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:02:40,004 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:02:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:02:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:02:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:02:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:02:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:02:40,005 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:02:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:02:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:02:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:02:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:02:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:02:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:02:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:02:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:02:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:02:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:02:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:02:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:02:40,009 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:02:40,010 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:02:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:02:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:02:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:02:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:02:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:02:40,011 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:02:40,012 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:02:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:02:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:02:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:02:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:02:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:02:40,013 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:02:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:02:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:02:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:02:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:02:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:02:40,014 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:02:40,015 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:02:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:02:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:02:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:02:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:02:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:02:40,016 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:02:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:02:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:02:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:02:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:02:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:02:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:02:40,018 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-20 13:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-09-20 13:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-09-20 13:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:02:40,413 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:02:40,667 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:02:40,668 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:02:40,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:40 BoogieIcfgContainer [2019-09-20 13:02:40,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:02:40,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:02:40,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:02:40,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:02:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:02:39" (1/3) ... [2019-09-20 13:02:40,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdf49bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:40, skipping insertion in model container [2019-09-20 13:02:40,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:39" (2/3) ... [2019-09-20 13:02:40,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdf49bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:40, skipping insertion in model container [2019-09-20 13:02:40,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:40" (3/3) ... [2019-09-20 13:02:40,679 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2019-09-20 13:02:40,689 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:02:40,698 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:02:40,715 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:02:40,752 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:02:40,753 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:02:40,753 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:02:40,753 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:02:40,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:02:40,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:02:40,754 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:02:40,754 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:02:40,754 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:02:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-09-20 13:02:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:02:40,786 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:40,787 INFO L407 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] [2019-09-20 13:02:40,789 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1012713618, now seen corresponding path program 1 times [2019-09-20 13:02:40,796 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:40,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:40,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:40,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:40,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:02:41,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:41,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:02:41,121 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:02:41,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:02:41,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:41,141 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-09-20 13:02:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:41,219 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2019-09-20 13:02:41,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:02:41,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-09-20 13:02:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:41,235 INFO L225 Difference]: With dead ends: 97 [2019-09-20 13:02:41,235 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:02:41,241 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:02:41,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-09-20 13:02:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:02:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-09-20 13:02:41,300 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2019-09-20 13:02:41,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:41,302 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-09-20 13:02:41,302 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:02:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-09-20 13:02:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-20 13:02:41,306 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:41,307 INFO L407 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] [2019-09-20 13:02:41,307 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1012699699, now seen corresponding path program 1 times [2019-09-20 13:02:41,309 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:41,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:41,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:41,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:41,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:02:41,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:41,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:02:41,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:02:41,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:02:41,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:02:41,476 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2019-09-20 13:02:41,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:41,557 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-09-20 13:02:41,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:02:41,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-09-20 13:02:41,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:41,560 INFO L225 Difference]: With dead ends: 70 [2019-09-20 13:02:41,560 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:02:41,562 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:02:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:02:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-20 13:02:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:02:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2019-09-20 13:02:41,578 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2019-09-20 13:02:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:41,578 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2019-09-20 13:02:41,579 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:02:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2019-09-20 13:02:41,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-09-20 13:02:41,582 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:41,582 INFO L407 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] [2019-09-20 13:02:41,583 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:41,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:41,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1741397995, now seen corresponding path program 1 times [2019-09-20 13:02:41,583 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:41,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:41,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:41,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:41,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:42,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:42,061 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:02:42,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:42,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 45 conjunts are in the unsatisfiable core [2019-09-20 13:02:42,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:42,482 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 [2019-09-20 13:02:42,483 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:42,492 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:42,493 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:42,493 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-20 13:02:43,618 WARN L191 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 20 [2019-09-20 13:02:44,752 WARN L191 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-20 13:02:44,774 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:44,795 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:44,796 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. [2019-09-20 13:02:44,797 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-09-20 13:02:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:54,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:02:54,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2019-09-20 13:02:54,002 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-20 13:02:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-20 13:02:54,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=483, Unknown=3, NotChecked=0, Total=552 [2019-09-20 13:02:54,006 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 24 states. [2019-09-20 13:02:55,835 WARN L191 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 25 [2019-09-20 13:03:00,874 WARN L191 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-09-20 13:03:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:03,263 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-09-20 13:03:03,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:03:03,264 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 44 [2019-09-20 13:03:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:03,265 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:03:03,265 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:03:03,266 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=105, Invalid=822, Unknown=3, NotChecked=0, Total=930 [2019-09-20 13:03:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:03:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-20 13:03:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:03:03,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-09-20 13:03:03,274 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 44 [2019-09-20 13:03:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:03,275 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-09-20 13:03:03,275 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-20 13:03:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-09-20 13:03:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-20 13:03:03,276 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:03,276 INFO L407 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] [2019-09-20 13:03:03,277 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:03,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1156352198, now seen corresponding path program 1 times [2019-09-20 13:03:03,277 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:03,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:03,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:03,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:04,470 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-09-20 13:03:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:04,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:04,521 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:04,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:04,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 91 conjunts are in the unsatisfiable core [2019-09-20 13:03:04,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:04,720 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 [2019-09-20 13:03:04,720 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,722 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,722 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,722 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-09-20 13:03:04,852 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,853 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 [2019-09-20 13:03:04,853 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,860 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,860 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,861 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-09-20 13:03:04,920 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 [2019-09-20 13:03:04,920 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,927 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,928 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:04,928 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-09-20 13:03:04,996 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:04,997 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 [2019-09-20 13:03:04,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-20 13:03:04,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,001 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-20 13:03:05,022 INFO L567 ElimStorePlain]: treesize reduction 25, result has 49.0 percent of original size [2019-09-20 13:03:05,023 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. [2019-09-20 13:03:05,023 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2019-09-20 13:03:05,227 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-09-20 13:03:05,231 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 [2019-09-20 13:03:05,231 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,242 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,269 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,270 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 [2019-09-20 13:03:05,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,275 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:05,303 INFO L567 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2019-09-20 13:03:05,304 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,305 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:7 [2019-09-20 13:03:07,688 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 [2019-09-20 13:03:24,380 WARN L191 SmtUtils]: Spent 2.41 s on a formula simplification that was a NOOP. DAG size: 36 [2019-09-20 13:03:24,394 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:24,413 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:24,414 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. [2019-09-20 13:03:24,415 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:59