/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:46,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:46,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:46,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:46,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:46,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:46,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:46,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:46,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:46,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:46,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:46,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:46,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:46,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:46,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:46,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:46,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:46,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:46,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:46,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:46,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:46,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:46,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:46,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:46,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:46,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:46,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:46,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:46,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:46,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:46,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:46,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:46,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:46,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:46,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:46,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:46,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:46,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:46,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:46,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:46,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:46,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:46,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:46,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:46,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:46,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:46,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:46,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:46,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:46,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:46,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:46,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:46,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:46,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:46,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:46,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:46,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:46,167 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:46,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:46,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:46,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:46,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:46,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:46,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:46,169 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:46,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:46,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:46,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:46,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:46,458 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:46,458 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-07-07 13:25:46,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/630ffa6a5/8107ad06cadb49a59747282b7877834a/FLAGf25c6064a [2020-07-07 13:25:47,053 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:47,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-07-07 13:25:47,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/630ffa6a5/8107ad06cadb49a59747282b7877834a/FLAGf25c6064a [2020-07-07 13:25:47,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/630ffa6a5/8107ad06cadb49a59747282b7877834a [2020-07-07 13:25:47,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:47,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:47,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:47,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:47,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:47,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:47,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335427ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47, skipping insertion in model container [2020-07-07 13:25:47,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:47,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:47,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:47,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:47,881 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:47,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:47,992 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:47,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47 WrapperNode [2020-07-07 13:25:47,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:47,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:47,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:47,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:48,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (1/1) ... [2020-07-07 13:25:48,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:48,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:48,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:48,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:48,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (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 [2020-07-07 13:25:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-07 13:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-07 13:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-07-07 13:25:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-07-07 13:25:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-07-07 13:25:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:48,129 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:25:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:25:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:48,130 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:48,133 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:48,134 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:48,135 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:48,136 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:48,145 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:48,146 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:48,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:48,149 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:48,150 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:48,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-07 13:25:48,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-07 13:25:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-07-07 13:25:48,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-07-07 13:25:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-07-07 13:25:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:48,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:48,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:48,589 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:25:48,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:48,776 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 13:25:48,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:48 BoogieIcfgContainer [2020-07-07 13:25:48,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:48,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:48,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:48,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:47" (1/3) ... [2020-07-07 13:25:48,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d489bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:48, skipping insertion in model container [2020-07-07 13:25:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47" (2/3) ... [2020-07-07 13:25:48,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d489bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:48, skipping insertion in model container [2020-07-07 13:25:48,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:48" (3/3) ... [2020-07-07 13:25:48,790 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-07-07 13:25:48,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:48,810 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:25:48,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:25:48,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:48,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:48,850 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:48,851 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:48,851 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:48,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:48,852 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:48,852 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-07-07 13:25:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:25:48,887 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:48,888 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:48,889 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:48,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-07-07 13:25:48,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:48,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577129400] [2020-07-07 13:25:48,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:49,161 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:49,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577129400] [2020-07-07 13:25:49,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:49,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:49,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666769397] [2020-07-07 13:25:49,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:49,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:49,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:49,196 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-07-07 13:25:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:49,704 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-07-07 13:25:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:25:49,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-07-07 13:25:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:49,720 INFO L225 Difference]: With dead ends: 230 [2020-07-07 13:25:49,720 INFO L226 Difference]: Without dead ends: 128 [2020-07-07 13:25:49,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-07 13:25:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-07-07 13:25:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-07 13:25:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-07-07 13:25:49,791 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-07-07 13:25:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:49,792 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-07-07 13:25:49,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-07-07 13:25:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:25:49,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:49,795 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:49,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:49,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:49,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-07-07 13:25:49,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:49,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731706736] [2020-07-07 13:25:49,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:49,995 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:49,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731706736] [2020-07-07 13:25:49,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:49,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:49,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902383427] [2020-07-07 13:25:49,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:50,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:50,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:50,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:50,001 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 6 states. [2020-07-07 13:25:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:50,508 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2020-07-07 13:25:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:25:50,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-07 13:25:50,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:50,512 INFO L225 Difference]: With dead ends: 171 [2020-07-07 13:25:50,512 INFO L226 Difference]: Without dead ends: 144 [2020-07-07 13:25:50,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-07 13:25:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-07-07 13:25:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-07 13:25:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-07-07 13:25:50,534 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-07-07 13:25:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:50,534 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-07-07 13:25:50,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-07-07 13:25:50,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 13:25:50,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:50,537 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:50,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:50,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:50,538 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-07-07 13:25:50,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:50,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675991071] [2020-07-07 13:25:50,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:50,802 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:50,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675991071] [2020-07-07 13:25:50,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:50,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:50,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374014148] [2020-07-07 13:25:50,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:50,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:50,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:50,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:50,804 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2020-07-07 13:25:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:51,145 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-07-07 13:25:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:25:51,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-07-07 13:25:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:51,147 INFO L225 Difference]: With dead ends: 147 [2020-07-07 13:25:51,147 INFO L226 Difference]: Without dead ends: 93 [2020-07-07 13:25:51,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-07 13:25:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-07-07 13:25:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-07 13:25:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-07-07 13:25:51,177 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-07-07 13:25:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:51,177 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-07-07 13:25:51,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-07-07 13:25:51,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-07 13:25:51,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:51,185 INFO L422 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, 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, 1, 1, 1, 1, 1] [2020-07-07 13:25:51,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:51,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-07-07 13:25:51,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:51,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351201941] [2020-07-07 13:25:51,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:51,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:51,200 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:25:51,210 INFO L168 Benchmark]: Toolchain (without parser) took 3846.34 ms. Allocated memory was 137.9 MB in the beginning and 249.6 MB in the end (delta: 111.7 MB). Free memory was 102.0 MB in the beginning and 142.8 MB in the end (delta: -40.7 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:51,211 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:51,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.13 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 169.2 MB in the end (delta: -67.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:51,218 INFO L168 Benchmark]: Boogie Preprocessor took 65.41 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 166.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:51,219 INFO L168 Benchmark]: RCFGBuilder took 722.03 ms. Allocated memory is still 203.4 MB. Free memory was 166.5 MB in the beginning and 114.6 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:51,225 INFO L168 Benchmark]: TraceAbstraction took 2422.74 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 114.6 MB in the beginning and 142.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:51,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.13 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 169.2 MB in the end (delta: -67.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.41 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 166.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 722.03 ms. Allocated memory is still 203.4 MB. Free memory was 166.5 MB in the beginning and 114.6 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2422.74 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 114.6 MB in the beginning and 142.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...