/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_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:45,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:45,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:45,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:45,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:45,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:45,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:45,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:45,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:45,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:45,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:45,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:45,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:45,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:45,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:45,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:45,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:45,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:45,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:45,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:45,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:45,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:45,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:45,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:45,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:45,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:45,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:45,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:45,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:45,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:45,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:45,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:45,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:45,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:45,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:45,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:45,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:45,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:45,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:45,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:45,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:45,548 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 13:25:45,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:45,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:45,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:45,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:45,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:45,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:45,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:45,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:45,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:45,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:45,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:45,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:45,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:45,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:45,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:45,562 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:45,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:45,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:45,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:45,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:45,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:45,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:45,563 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:45,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:45,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:45,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:45,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:45,910 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:45,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2020-07-07 13:25:45,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f46130a60/92a0533843ae4c098d70720c87125210/FLAG373596e9d [2020-07-07 13:25:46,538 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:46,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2020-07-07 13:25:46,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f46130a60/92a0533843ae4c098d70720c87125210/FLAG373596e9d [2020-07-07 13:25:46,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f46130a60/92a0533843ae4c098d70720c87125210 [2020-07-07 13:25:46,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:46,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:46,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:46,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:46,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:46,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:46" (1/1) ... [2020-07-07 13:25:46,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0a60dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:46, skipping insertion in model container [2020-07-07 13:25:46,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:46" (1/1) ... [2020-07-07 13:25:46,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:46,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:47,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:47,392 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:47,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:47,526 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:47,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:47 WrapperNode [2020-07-07 13:25:47,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:47,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:47,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:47,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:47,537 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 13:25:47,537 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 13:25:47,554 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 13:25:47,555 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 13:25:47,570 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 13:25:47,575 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 13:25:47,579 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 13:25:47,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:47,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:47,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:47,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:47,587 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 13:25:47,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:25:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:25:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:25:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-07 13:25:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-07 13:25:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2020-07-07 13:25:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:25:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:25:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:47,664 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:47,666 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:47,668 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:47,669 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:47,670 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-07 13:25:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-07 13:25:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2020-07-07 13:25:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:25:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 13:25:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:48,018 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:25:48,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:48,202 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 13:25:48,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:48 BoogieIcfgContainer [2020-07-07 13:25:48,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:48,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:48,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:48,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:48,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:46" (1/3) ... [2020-07-07 13:25:48,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c41277c 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 13:25:48,223 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 13:25:48,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c41277c 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 13:25:48,224 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 13:25:48,225 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2020-07-07 13:25:48,238 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:48,249 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:25:48,269 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:25:48,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:48,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:48,299 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:48,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:48,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:48,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:48,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:48,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-07-07 13:25:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 13:25:48,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:48,347 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] [2020-07-07 13:25:48,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:48,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1551017908, now seen corresponding path program 1 times [2020-07-07 13:25:48,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:48,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689555854] [2020-07-07 13:25:48,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:48,711 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 13:25:48,715 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:48,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689555854] [2020-07-07 13:25:48,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:48,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:48,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316284452] [2020-07-07 13:25:48,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:48,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:48,740 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 6 states. [2020-07-07 13:25:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:49,111 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2020-07-07 13:25:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:49,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-07 13:25:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:49,125 INFO L225 Difference]: With dead ends: 121 [2020-07-07 13:25:49,125 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 13:25:49,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:25:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 13:25:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-07-07 13:25:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-07 13:25:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-07-07 13:25:49,187 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 27 [2020-07-07 13:25:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:49,187 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-07-07 13:25:49,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-07-07 13:25:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-07 13:25:49,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:49,190 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] [2020-07-07 13:25:49,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:49,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:49,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:49,191 INFO L82 PathProgramCache]: Analyzing trace with hash 624461213, now seen corresponding path program 1 times [2020-07-07 13:25:49,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:49,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765647054] [2020-07-07 13:25:49,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:49,396 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 13:25:49,396 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:49,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765647054] [2020-07-07 13:25:49,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:49,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:49,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476502496] [2020-07-07 13:25:49,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:49,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:49,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:49,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:49,404 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 8 states. [2020-07-07 13:25:49,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:49,653 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-07-07 13:25:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 13:25:49,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-07-07 13:25:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:49,656 INFO L225 Difference]: With dead ends: 100 [2020-07-07 13:25:49,656 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 13:25:49,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 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 13:25:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 13:25:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-07-07 13:25:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-07 13:25:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-07-07 13:25:49,672 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 44 [2020-07-07 13:25:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:49,672 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-07-07 13:25:49,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:49,672 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-07-07 13:25:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-07 13:25:49,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:49,675 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] [2020-07-07 13:25:49,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:49,675 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:49,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1157296683, now seen corresponding path program 1 times [2020-07-07 13:25:49,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:49,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661856166] [2020-07-07 13:25:49,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:49,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:49,704 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 13:25:49,710 INFO L168 Benchmark]: Toolchain (without parser) took 2859.62 ms. Allocated memory was 142.6 MB in the beginning and 227.5 MB in the end (delta: 84.9 MB). Free memory was 99.2 MB in the beginning and 103.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,711 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.59 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 98.9 MB in the beginning and 165.9 MB in the end (delta: -67.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,713 INFO L168 Benchmark]: Boogie Preprocessor took 58.45 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 163.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,714 INFO L168 Benchmark]: RCFGBuilder took 627.83 ms. Allocated memory is still 199.8 MB. Free memory was 163.1 MB in the beginning and 115.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,715 INFO L168 Benchmark]: TraceAbstraction took 1490.90 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 114.8 MB in the beginning and 103.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:49,719 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 142.6 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.59 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 98.9 MB in the beginning and 165.9 MB in the end (delta: -67.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.45 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 163.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 627.83 ms. Allocated memory is still 199.8 MB. Free memory was 163.1 MB in the beginning and 115.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1490.90 ms. Allocated memory was 199.8 MB in the beginning and 227.5 MB in the end (delta: 27.8 MB). Free memory was 114.8 MB in the beginning and 103.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 39.6 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...