/usr/bin/java -ea -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 0.1.25-46f3038-m [2020-07-08 16:26:19,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 16:26:19,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 16:26:19,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 16:26:19,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 16:26:19,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 16:26:19,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 16:26:19,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 16:26:19,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 16:26:19,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 16:26:19,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 16:26:19,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 16:26:19,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 16:26:19,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 16:26:19,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 16:26:19,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 16:26:19,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 16:26:19,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 16:26:19,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 16:26:19,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 16:26:19,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 16:26:19,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 16:26:19,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 16:26:19,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 16:26:19,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-08 16:26:19,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-08 16:26:19,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-08 16:26:19,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-08 16:26:19,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-08 16:26:19,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-08 16:26:19,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 16:26:19,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 16:26:19,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 16:26:19,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 16:26:19,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 16:26:19,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 16:26:19,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 16:26:19,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 16:26:19,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 16:26:19,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 16:26:19,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 16:26:19,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 16:26:19,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 16:26:19,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 16:26:19,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 16:26:19,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 16:26:19,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 16:26:19,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 16:26:19,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 16:26:19,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 16:26:19,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 16:26:19,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 16:26:19,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 16:26:19,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 16:26:19,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 16:26:19,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 16:26:19,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 16:26:19,425 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 16:26:19,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 16:26:19,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 16:26:19,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 16:26:19,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 16:26:19,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 16:26:19,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 16:26:19,426 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-08 16:26:19,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 16:26:19,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 16:26:19,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 16:26:19,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 16:26:19,718 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 16:26:19,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2020-07-08 16:26:19,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a5a96db/2163140c879a4a1d97f9da1b550e80ed/FLAGd788402f4 [2020-07-08 16:26:20,321 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 16:26:20,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_remove_all.i [2020-07-08 16:26:20,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a5a96db/2163140c879a4a1d97f9da1b550e80ed/FLAGd788402f4 [2020-07-08 16:26:20,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05a5a96db/2163140c879a4a1d97f9da1b550e80ed [2020-07-08 16:26:20,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 16:26:20,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 16:26:20,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 16:26:20,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 16:26:20,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 16:26:20,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:26:20" (1/1) ... [2020-07-08 16:26:20,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee9058c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:20, skipping insertion in model container [2020-07-08 16:26:20,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 04:26:20" (1/1) ... [2020-07-08 16:26:20,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 16:26:20,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 16:26:21,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:26:21,066 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 16:26:21,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 16:26:21,177 INFO L208 MainTranslator]: Completed translation [2020-07-08 16:26:21,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21 WrapperNode [2020-07-08 16:26:21,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 16:26:21,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 16:26:21,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 16:26:21,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 16:26:21,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (1/1) ... [2020-07-08 16:26:21,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 16:26:21,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 16:26:21,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 16:26:21,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 16:26:21,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (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 [2020-07-08 16:26:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 16:26:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_remove_first [2020-07-08 16:26:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 16:26:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 16:26:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-08 16:26:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-08 16:26:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-08 16:26:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-08 16:26:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-08 16:26:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-08 16:26:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-08 16:26:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-08 16:26:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-08 16:26:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-08 16:26:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-08 16:26:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-08 16:26:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-08 16:26:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-08 16:26:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-08 16:26:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-08 16:26:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-08 16:26:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-08 16:26:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-08 16:26:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-08 16:26:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-08 16:26:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-08 16:26:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-08 16:26:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-08 16:26:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-08 16:26:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-08 16:26:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-08 16:26:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-08 16:26:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-08 16:26:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-08 16:26:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-08 16:26:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-08 16:26:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-08 16:26:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-08 16:26:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-08 16:26:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-08 16:26:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-08 16:26:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-08 16:26:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-08 16:26:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-08 16:26:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-08 16:26:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-08 16:26:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-08 16:26:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-08 16:26:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-08 16:26:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-08 16:26:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-08 16:26:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-08 16:26:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-08 16:26:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure sll_remove_first [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 16:26:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 16:26:21,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-08 16:26:21,682 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-08 16:26:21,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 16:26:21,959 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-08 16:26:21,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:26:21 BoogieIcfgContainer [2020-07-08 16:26:21,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 16:26:21,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 16:26:21,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 16:26:21,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 16:26:21,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 04:26:20" (1/3) ... [2020-07-08 16:26:21,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6152ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:26:21, skipping insertion in model container [2020-07-08 16:26:21,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 04:26:21" (2/3) ... [2020-07-08 16:26:21,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6152ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 04:26:21, skipping insertion in model container [2020-07-08 16:26:21,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 04:26:21" (3/3) ... [2020-07-08 16:26:21,972 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all.i [2020-07-08 16:26:21,982 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 16:26:21,990 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 16:26:22,005 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 16:26:22,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 16:26:22,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 16:26:22,027 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-08 16:26:22,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 16:26:22,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 16:26:22,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 16:26:22,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 16:26:22,029 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 16:26:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-07-08 16:26:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-08 16:26:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:26:22,057 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] [2020-07-08 16:26:22,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:26:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:26:22,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1551017908, now seen corresponding path program 1 times [2020-07-08 16:26:22,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:26:22,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552806198] [2020-07-08 16:26:22,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:26:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:22,403 INFO L280 TraceCheckUtils]: 0: Hoare triple {94#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {78#true} is VALID [2020-07-08 16:26:22,403 INFO L280 TraceCheckUtils]: 1: Hoare triple {78#true} #valid := #valid[0 := 0]; {78#true} is VALID [2020-07-08 16:26:22,404 INFO L280 TraceCheckUtils]: 2: Hoare triple {78#true} assume 0 < #StackHeapBarrier; {78#true} is VALID [2020-07-08 16:26:22,404 INFO L280 TraceCheckUtils]: 3: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-08 16:26:22,405 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {78#true} {78#true} #120#return; {78#true} is VALID [2020-07-08 16:26:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:22,450 INFO L280 TraceCheckUtils]: 0: Hoare triple {95#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {78#true} is VALID [2020-07-08 16:26:22,450 INFO L280 TraceCheckUtils]: 1: Hoare triple {78#true} ~data := #in~data; {78#true} is VALID [2020-07-08 16:26:22,451 INFO L280 TraceCheckUtils]: 2: Hoare triple {78#true} ~head~0.base, ~head~0.offset := 0, 0; {78#true} is VALID [2020-07-08 16:26:22,451 INFO L280 TraceCheckUtils]: 3: Hoare triple {78#true} assume !(~len > 0); {78#true} is VALID [2020-07-08 16:26:22,451 INFO L280 TraceCheckUtils]: 4: Hoare triple {78#true} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {78#true} is VALID [2020-07-08 16:26:22,452 INFO L280 TraceCheckUtils]: 5: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-08 16:26:22,454 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {78#true} {85#(<= 2 main_~len~0)} #116#return; {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,455 INFO L263 TraceCheckUtils]: 0: Hoare triple {78#true} call ULTIMATE.init(); {94#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 16:26:22,456 INFO L280 TraceCheckUtils]: 1: Hoare triple {94#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {78#true} is VALID [2020-07-08 16:26:22,456 INFO L280 TraceCheckUtils]: 2: Hoare triple {78#true} #valid := #valid[0 := 0]; {78#true} is VALID [2020-07-08 16:26:22,456 INFO L280 TraceCheckUtils]: 3: Hoare triple {78#true} assume 0 < #StackHeapBarrier; {78#true} is VALID [2020-07-08 16:26:22,457 INFO L280 TraceCheckUtils]: 4: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-08 16:26:22,457 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {78#true} {78#true} #120#return; {78#true} is VALID [2020-07-08 16:26:22,457 INFO L263 TraceCheckUtils]: 6: Hoare triple {78#true} call #t~ret11 := main(); {78#true} is VALID [2020-07-08 16:26:22,458 INFO L280 TraceCheckUtils]: 7: Hoare triple {78#true} ~len~0 := 2; {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,459 INFO L280 TraceCheckUtils]: 8: Hoare triple {85#(<= 2 main_~len~0)} ~data~0 := 1; {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,460 INFO L280 TraceCheckUtils]: 9: Hoare triple {85#(<= 2 main_~len~0)} SUMMARY for call ~#s~0.base, ~#s~0.offset := #Ultimate.allocOnStack(4); srcloc: L589 {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,462 INFO L263 TraceCheckUtils]: 10: Hoare triple {85#(<= 2 main_~len~0)} call #t~ret8.base, #t~ret8.offset := sll_create(~len~0, ~data~0); {95#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-08 16:26:22,463 INFO L280 TraceCheckUtils]: 11: Hoare triple {95#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {78#true} is VALID [2020-07-08 16:26:22,463 INFO L280 TraceCheckUtils]: 12: Hoare triple {78#true} ~data := #in~data; {78#true} is VALID [2020-07-08 16:26:22,463 INFO L280 TraceCheckUtils]: 13: Hoare triple {78#true} ~head~0.base, ~head~0.offset := 0, 0; {78#true} is VALID [2020-07-08 16:26:22,464 INFO L280 TraceCheckUtils]: 14: Hoare triple {78#true} assume !(~len > 0); {78#true} is VALID [2020-07-08 16:26:22,464 INFO L280 TraceCheckUtils]: 15: Hoare triple {78#true} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {78#true} is VALID [2020-07-08 16:26:22,464 INFO L280 TraceCheckUtils]: 16: Hoare triple {78#true} assume true; {78#true} is VALID [2020-07-08 16:26:22,466 INFO L275 TraceCheckUtils]: 17: Hoare quadruple {78#true} {85#(<= 2 main_~len~0)} #116#return; {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,467 INFO L280 TraceCheckUtils]: 18: Hoare triple {85#(<= 2 main_~len~0)} SUMMARY for call write~init~$Pointer$(#t~ret8.base, #t~ret8.offset, ~#s~0.base, ~#s~0.offset, 4); srcloc: L589-2 {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,468 INFO L280 TraceCheckUtils]: 19: Hoare triple {85#(<= 2 main_~len~0)} havoc #t~ret8.base, #t~ret8.offset; {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,468 INFO L280 TraceCheckUtils]: 20: Hoare triple {85#(<= 2 main_~len~0)} havoc ~i~0; {85#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:22,470 INFO L280 TraceCheckUtils]: 21: Hoare triple {85#(<= 2 main_~len~0)} ~i~0 := ~len~0 - 1; {93#(<= 1 main_~i~0)} is VALID [2020-07-08 16:26:22,471 INFO L280 TraceCheckUtils]: 22: Hoare triple {93#(<= 1 main_~i~0)} assume !(~i~0 >= 0); {79#false} is VALID [2020-07-08 16:26:22,471 INFO L280 TraceCheckUtils]: 23: Hoare triple {79#false} SUMMARY for call #t~mem10.base, #t~mem10.offset := read~$Pointer$(~#s~0.base, ~#s~0.offset, 4); srcloc: L591-6 {79#false} is VALID [2020-07-08 16:26:22,471 INFO L280 TraceCheckUtils]: 24: Hoare triple {79#false} assume 0 != #t~mem10.base || 0 != #t~mem10.offset; {79#false} is VALID [2020-07-08 16:26:22,472 INFO L280 TraceCheckUtils]: 25: Hoare triple {79#false} havoc #t~mem10.base, #t~mem10.offset; {79#false} is VALID [2020-07-08 16:26:22,472 INFO L280 TraceCheckUtils]: 26: Hoare triple {79#false} assume !false; {79#false} is VALID [2020-07-08 16:26:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:26:22,476 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:26:22,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552806198] [2020-07-08 16:26:22,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:26:22,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-08 16:26:22,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121798022] [2020-07-08 16:26:22,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-08 16:26:22,490 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:26:22,493 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-08 16:26:22,538 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:26:22,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-08 16:26:22,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:26:22,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-08 16:26:22,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-08 16:26:22,550 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 6 states. [2020-07-08 16:26:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:26:23,432 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2020-07-08 16:26:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-08 16:26:23,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-08 16:26:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:26:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:26:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2020-07-08 16:26:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-08 16:26:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2020-07-08 16:26:23,484 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 134 transitions. [2020-07-08 16:26:23,681 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 134 edges. 134 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:26:23,703 INFO L225 Difference]: With dead ends: 121 [2020-07-08 16:26:23,703 INFO L226 Difference]: Without dead ends: 70 [2020-07-08 16:26:23,708 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 [2020-07-08 16:26:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-08 16:26:23,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-07-08 16:26:23,841 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:26:23,842 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand 62 states. [2020-07-08 16:26:23,842 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand 62 states. [2020-07-08 16:26:23,842 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 62 states. [2020-07-08 16:26:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:26:23,856 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-07-08 16:26:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-07-08 16:26:23,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:26:23,858 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:26:23,858 INFO L74 IsIncluded]: Start isIncluded. First operand 62 states. Second operand 70 states. [2020-07-08 16:26:23,859 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 70 states. [2020-07-08 16:26:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:26:23,876 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-07-08 16:26:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-07-08 16:26:23,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:26:23,879 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:26:23,879 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:26:23,880 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:26:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-08 16:26:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-07-08 16:26:23,893 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 27 [2020-07-08 16:26:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:26:23,894 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-07-08 16:26:23,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-08 16:26:23,894 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 62 states and 63 transitions. [2020-07-08 16:26:23,977 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:26:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-07-08 16:26:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-08 16:26:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:26:23,981 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] [2020-07-08 16:26:23,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 16:26:23,981 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:26:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:26:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash 624461213, now seen corresponding path program 1 times [2020-07-08 16:26:23,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:26:23,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848875907] [2020-07-08 16:26:23,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:26:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:24,148 INFO L280 TraceCheckUtils]: 0: Hoare triple {638#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {611#true} is VALID [2020-07-08 16:26:24,148 INFO L280 TraceCheckUtils]: 1: Hoare triple {611#true} #valid := #valid[0 := 0]; {611#true} is VALID [2020-07-08 16:26:24,148 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#true} assume 0 < #StackHeapBarrier; {611#true} is VALID [2020-07-08 16:26:24,149 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-08 16:26:24,149 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {611#true} {611#true} #120#return; {611#true} is VALID [2020-07-08 16:26:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:24,212 INFO L280 TraceCheckUtils]: 0: Hoare triple {639#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-08 16:26:24,212 INFO L280 TraceCheckUtils]: 1: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~data := #in~data; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-08 16:26:24,213 INFO L280 TraceCheckUtils]: 2: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~head~0.base, ~head~0.offset := 0, 0; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-08 16:26:24,214 INFO L280 TraceCheckUtils]: 3: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} assume !(~len > 0); {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-08 16:26:24,215 INFO L280 TraceCheckUtils]: 4: Hoare triple {641#(<= |sll_create_#in~len| 0)} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-08 16:26:24,215 INFO L280 TraceCheckUtils]: 5: Hoare triple {641#(<= |sll_create_#in~len| 0)} assume true; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-08 16:26:24,217 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {641#(<= |sll_create_#in~len| 0)} {618#(<= 2 main_~len~0)} #116#return; {612#false} is VALID [2020-07-08 16:26:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 16:26:24,247 INFO L280 TraceCheckUtils]: 0: Hoare triple {642#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~head.base, ~head.offset := #in~head.base, #in~head.offset; {611#true} is VALID [2020-07-08 16:26:24,247 INFO L280 TraceCheckUtils]: 1: Hoare triple {611#true} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L582 {611#true} is VALID [2020-07-08 16:26:24,248 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#true} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(#t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L582-1 {611#true} is VALID [2020-07-08 16:26:24,248 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#true} ~temp~1.base, ~temp~1.offset := #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-08 16:26:24,248 INFO L280 TraceCheckUtils]: 4: Hoare triple {611#true} havoc #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-08 16:26:24,248 INFO L280 TraceCheckUtils]: 5: Hoare triple {611#true} havoc #t~mem5.base, #t~mem5.offset; {611#true} is VALID [2020-07-08 16:26:24,249 INFO L280 TraceCheckUtils]: 6: Hoare triple {611#true} SUMMARY for call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L583 {611#true} is VALID [2020-07-08 16:26:24,249 INFO L280 TraceCheckUtils]: 7: Hoare triple {611#true} SUMMARY for call ULTIMATE.dealloc(#t~mem7.base, #t~mem7.offset); srcloc: L583-1 {611#true} is VALID [2020-07-08 16:26:24,249 INFO L280 TraceCheckUtils]: 8: Hoare triple {611#true} havoc #t~mem7.base, #t~mem7.offset; {611#true} is VALID [2020-07-08 16:26:24,250 INFO L280 TraceCheckUtils]: 9: Hoare triple {611#true} SUMMARY for call write~$Pointer$(~temp~1.base, ~temp~1.offset, ~head.base, ~head.offset, 4); srcloc: L584 {611#true} is VALID [2020-07-08 16:26:24,250 INFO L280 TraceCheckUtils]: 10: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-08 16:26:24,250 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {611#true} {612#false} #118#return; {612#false} is VALID [2020-07-08 16:26:24,252 INFO L263 TraceCheckUtils]: 0: Hoare triple {611#true} call ULTIMATE.init(); {638#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-08 16:26:24,252 INFO L280 TraceCheckUtils]: 1: Hoare triple {638#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {611#true} is VALID [2020-07-08 16:26:24,252 INFO L280 TraceCheckUtils]: 2: Hoare triple {611#true} #valid := #valid[0 := 0]; {611#true} is VALID [2020-07-08 16:26:24,253 INFO L280 TraceCheckUtils]: 3: Hoare triple {611#true} assume 0 < #StackHeapBarrier; {611#true} is VALID [2020-07-08 16:26:24,253 INFO L280 TraceCheckUtils]: 4: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-08 16:26:24,253 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {611#true} {611#true} #120#return; {611#true} is VALID [2020-07-08 16:26:24,253 INFO L263 TraceCheckUtils]: 6: Hoare triple {611#true} call #t~ret11 := main(); {611#true} is VALID [2020-07-08 16:26:24,254 INFO L280 TraceCheckUtils]: 7: Hoare triple {611#true} ~len~0 := 2; {618#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:24,255 INFO L280 TraceCheckUtils]: 8: Hoare triple {618#(<= 2 main_~len~0)} ~data~0 := 1; {618#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:24,256 INFO L280 TraceCheckUtils]: 9: Hoare triple {618#(<= 2 main_~len~0)} SUMMARY for call ~#s~0.base, ~#s~0.offset := #Ultimate.allocOnStack(4); srcloc: L589 {618#(<= 2 main_~len~0)} is VALID [2020-07-08 16:26:24,257 INFO L263 TraceCheckUtils]: 10: Hoare triple {618#(<= 2 main_~len~0)} call #t~ret8.base, #t~ret8.offset := sll_create(~len~0, ~data~0); {639#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-08 16:26:24,258 INFO L280 TraceCheckUtils]: 11: Hoare triple {639#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~len := #in~len; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-08 16:26:24,259 INFO L280 TraceCheckUtils]: 12: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~data := #in~data; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-08 16:26:24,259 INFO L280 TraceCheckUtils]: 13: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} ~head~0.base, ~head~0.offset := 0, 0; {640#(= |sll_create_#in~len| sll_create_~len)} is VALID [2020-07-08 16:26:24,260 INFO L280 TraceCheckUtils]: 14: Hoare triple {640#(= |sll_create_#in~len| sll_create_~len)} assume !(~len > 0); {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-08 16:26:24,261 INFO L280 TraceCheckUtils]: 15: Hoare triple {641#(<= |sll_create_#in~len| 0)} #res.base, #res.offset := ~head~0.base, ~head~0.offset; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-08 16:26:24,261 INFO L280 TraceCheckUtils]: 16: Hoare triple {641#(<= |sll_create_#in~len| 0)} assume true; {641#(<= |sll_create_#in~len| 0)} is VALID [2020-07-08 16:26:24,263 INFO L275 TraceCheckUtils]: 17: Hoare quadruple {641#(<= |sll_create_#in~len| 0)} {618#(<= 2 main_~len~0)} #116#return; {612#false} is VALID [2020-07-08 16:26:24,263 INFO L280 TraceCheckUtils]: 18: Hoare triple {612#false} SUMMARY for call write~init~$Pointer$(#t~ret8.base, #t~ret8.offset, ~#s~0.base, ~#s~0.offset, 4); srcloc: L589-2 {612#false} is VALID [2020-07-08 16:26:24,263 INFO L280 TraceCheckUtils]: 19: Hoare triple {612#false} havoc #t~ret8.base, #t~ret8.offset; {612#false} is VALID [2020-07-08 16:26:24,264 INFO L280 TraceCheckUtils]: 20: Hoare triple {612#false} havoc ~i~0; {612#false} is VALID [2020-07-08 16:26:24,264 INFO L280 TraceCheckUtils]: 21: Hoare triple {612#false} ~i~0 := ~len~0 - 1; {612#false} is VALID [2020-07-08 16:26:24,264 INFO L280 TraceCheckUtils]: 22: Hoare triple {612#false} assume !!(~i~0 >= 0); {612#false} is VALID [2020-07-08 16:26:24,265 INFO L263 TraceCheckUtils]: 23: Hoare triple {612#false} call sll_remove_first(~#s~0.base, ~#s~0.offset); {642#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-08 16:26:24,265 INFO L280 TraceCheckUtils]: 24: Hoare triple {642#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~head.base, ~head.offset := #in~head.base, #in~head.offset; {611#true} is VALID [2020-07-08 16:26:24,265 INFO L280 TraceCheckUtils]: 25: Hoare triple {611#true} SUMMARY for call #t~mem5.base, #t~mem5.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L582 {611#true} is VALID [2020-07-08 16:26:24,265 INFO L280 TraceCheckUtils]: 26: Hoare triple {611#true} SUMMARY for call #t~mem6.base, #t~mem6.offset := read~$Pointer$(#t~mem5.base, 4 + #t~mem5.offset, 4); srcloc: L582-1 {611#true} is VALID [2020-07-08 16:26:24,266 INFO L280 TraceCheckUtils]: 27: Hoare triple {611#true} ~temp~1.base, ~temp~1.offset := #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-08 16:26:24,266 INFO L280 TraceCheckUtils]: 28: Hoare triple {611#true} havoc #t~mem6.base, #t~mem6.offset; {611#true} is VALID [2020-07-08 16:26:24,266 INFO L280 TraceCheckUtils]: 29: Hoare triple {611#true} havoc #t~mem5.base, #t~mem5.offset; {611#true} is VALID [2020-07-08 16:26:24,267 INFO L280 TraceCheckUtils]: 30: Hoare triple {611#true} SUMMARY for call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~head.base, ~head.offset, 4); srcloc: L583 {611#true} is VALID [2020-07-08 16:26:24,267 INFO L280 TraceCheckUtils]: 31: Hoare triple {611#true} SUMMARY for call ULTIMATE.dealloc(#t~mem7.base, #t~mem7.offset); srcloc: L583-1 {611#true} is VALID [2020-07-08 16:26:24,267 INFO L280 TraceCheckUtils]: 32: Hoare triple {611#true} havoc #t~mem7.base, #t~mem7.offset; {611#true} is VALID [2020-07-08 16:26:24,268 INFO L280 TraceCheckUtils]: 33: Hoare triple {611#true} SUMMARY for call write~$Pointer$(~temp~1.base, ~temp~1.offset, ~head.base, ~head.offset, 4); srcloc: L584 {611#true} is VALID [2020-07-08 16:26:24,268 INFO L280 TraceCheckUtils]: 34: Hoare triple {611#true} assume true; {611#true} is VALID [2020-07-08 16:26:24,268 INFO L275 TraceCheckUtils]: 35: Hoare quadruple {611#true} {612#false} #118#return; {612#false} is VALID [2020-07-08 16:26:24,268 INFO L280 TraceCheckUtils]: 36: Hoare triple {612#false} #t~post9 := ~i~0; {612#false} is VALID [2020-07-08 16:26:24,269 INFO L280 TraceCheckUtils]: 37: Hoare triple {612#false} ~i~0 := #t~post9 - 1; {612#false} is VALID [2020-07-08 16:26:24,269 INFO L280 TraceCheckUtils]: 38: Hoare triple {612#false} havoc #t~post9; {612#false} is VALID [2020-07-08 16:26:24,269 INFO L280 TraceCheckUtils]: 39: Hoare triple {612#false} assume !(~i~0 >= 0); {612#false} is VALID [2020-07-08 16:26:24,270 INFO L280 TraceCheckUtils]: 40: Hoare triple {612#false} SUMMARY for call #t~mem10.base, #t~mem10.offset := read~$Pointer$(~#s~0.base, ~#s~0.offset, 4); srcloc: L591-6 {612#false} is VALID [2020-07-08 16:26:24,270 INFO L280 TraceCheckUtils]: 41: Hoare triple {612#false} assume 0 != #t~mem10.base || 0 != #t~mem10.offset; {612#false} is VALID [2020-07-08 16:26:24,270 INFO L280 TraceCheckUtils]: 42: Hoare triple {612#false} havoc #t~mem10.base, #t~mem10.offset; {612#false} is VALID [2020-07-08 16:26:24,271 INFO L280 TraceCheckUtils]: 43: Hoare triple {612#false} assume !false; {612#false} is VALID [2020-07-08 16:26:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 16:26:24,274 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-08 16:26:24,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848875907] [2020-07-08 16:26:24,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 16:26:24,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-08 16:26:24,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529396651] [2020-07-08 16:26:24,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-07-08 16:26:24,276 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 16:26:24,276 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-08 16:26:24,323 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:26:24,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-08 16:26:24,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 16:26:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-08 16:26:24,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-08 16:26:24,324 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 8 states. [2020-07-08 16:26:25,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:26:25,049 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-07-08 16:26:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-08 16:26:25,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-07-08 16:26:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 16:26:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 16:26:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2020-07-08 16:26:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-08 16:26:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2020-07-08 16:26:25,069 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 101 transitions. [2020-07-08 16:26:25,200 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 101 edges. 101 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:26:25,203 INFO L225 Difference]: With dead ends: 100 [2020-07-08 16:26:25,205 INFO L226 Difference]: Without dead ends: 70 [2020-07-08 16:26:25,208 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 [2020-07-08 16:26:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-08 16:26:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-07-08 16:26:25,286 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 16:26:25,286 INFO L82 GeneralOperation]: Start isEquivalent. First operand 70 states. Second operand 63 states. [2020-07-08 16:26:25,286 INFO L74 IsIncluded]: Start isIncluded. First operand 70 states. Second operand 63 states. [2020-07-08 16:26:25,287 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 63 states. [2020-07-08 16:26:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:26:25,292 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-07-08 16:26:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-07-08 16:26:25,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:26:25,293 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:26:25,294 INFO L74 IsIncluded]: Start isIncluded. First operand 63 states. Second operand 70 states. [2020-07-08 16:26:25,294 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 70 states. [2020-07-08 16:26:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 16:26:25,301 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-07-08 16:26:25,301 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-07-08 16:26:25,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 16:26:25,304 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 16:26:25,305 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 16:26:25,305 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 16:26:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-08 16:26:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-07-08 16:26:25,310 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 44 [2020-07-08 16:26:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 16:26:25,310 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-07-08 16:26:25,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-08 16:26:25,312 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 63 states and 64 transitions. [2020-07-08 16:26:25,389 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 16:26:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-07-08 16:26:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-08 16:26:25,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 16:26:25,391 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] [2020-07-08 16:26:25,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 16:26:25,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 16:26:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 16:26:25,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1157296683, now seen corresponding path program 1 times [2020-07-08 16:26:25,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 16:26:25,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723843903] [2020-07-08 16:26:25,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 16:26:25,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-08 16:26:25,434 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) [2020-07-08 16:26:25,440 INFO L168 Benchmark]: Toolchain (without parser) took 4810.76 ms. Allocated memory was 137.4 MB in the beginning and 297.8 MB in the end (delta: 160.4 MB). Free memory was 101.2 MB in the beginning and 210.3 MB in the end (delta: -109.1 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-07-08 16:26:25,441 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-08 16:26:25,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.15 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 165.4 MB in the end (delta: -64.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-07-08 16:26:25,442 INFO L168 Benchmark]: Boogie Preprocessor took 81.66 ms. Allocated memory is still 200.8 MB. Free memory was 165.4 MB in the beginning and 161.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-08 16:26:25,443 INFO L168 Benchmark]: RCFGBuilder took 703.32 ms. Allocated memory is still 200.8 MB. Free memory was 161.9 MB in the beginning and 102.2 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-07-08 16:26:25,444 INFO L168 Benchmark]: TraceAbstraction took 3472.51 ms. Allocated memory was 200.8 MB in the beginning and 297.8 MB in the end (delta: 97.0 MB). Free memory was 101.6 MB in the beginning and 210.3 MB in the end (delta: -108.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-08 16:26:25,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 548.15 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 165.4 MB in the end (delta: -64.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.66 ms. Allocated memory is still 200.8 MB. Free memory was 165.4 MB in the beginning and 161.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 703.32 ms. Allocated memory is still 200.8 MB. Free memory was 161.9 MB in the beginning and 102.2 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3472.51 ms. Allocated memory was 200.8 MB in the beginning and 297.8 MB in the end (delta: 97.0 MB). Free memory was 101.6 MB in the beginning and 210.3 MB in the end (delta: -108.8 MB). There was no memory consumed. 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...