/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:20:35,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:20:35,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:20:35,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:20:35,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:20:35,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:20:35,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:20:35,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:20:35,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:20:35,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:20:35,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:20:35,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:20:35,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:20:35,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:20:35,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:20:35,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:20:35,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:20:35,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:20:35,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:20:35,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:20:35,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:20:35,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:20:35,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:20:35,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:20:35,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:20:35,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:20:35,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:20:35,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:20:35,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:20:35,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:20:35,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:20:35,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:20:35,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:20:35,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:20:35,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:20:35,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:20:35,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:20:35,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:20:35,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:20:35,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:20:35,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:20:35,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:20:35,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:20:35,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:20:35,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:20:35,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:20:35,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:20:35,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:20:35,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:20:35,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:20:35,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:20:35,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:20:35,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:20:35,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:20:35,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:20:35,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:20:35,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:20:35,501 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:20:35,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:20:35,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:20:35,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:35,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:20:35,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:20:35,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:20:35,502 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:20:35,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:20:35,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:20:35,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:20:35,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:20:35,828 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:20:35,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-08-22 22:20:35,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cb065be/17874e4112be45ceb61f302b90bf2ea3/FLAGb0f212350 [2020-08-22 22:20:36,330 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:20:36,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-08-22 22:20:36,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cb065be/17874e4112be45ceb61f302b90bf2ea3/FLAGb0f212350 [2020-08-22 22:20:36,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02cb065be/17874e4112be45ceb61f302b90bf2ea3 [2020-08-22 22:20:36,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:20:36,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:20:36,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:36,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:20:36,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:20:36,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:36" (1/1) ... [2020-08-22 22:20:36,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d277a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:36, skipping insertion in model container [2020-08-22 22:20:36,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:36" (1/1) ... [2020-08-22 22:20:36,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:20:36,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:20:37,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:37,237 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:20:37,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:37,352 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:20:37,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37 WrapperNode [2020-08-22 22:20:37,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:37,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:20:37,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:20:37,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:20:37,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (1/1) ... [2020-08-22 22:20:37,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:20:37,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:20:37,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:20:37,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:20:37,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (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 [2020-08-22 22:20:37,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:20:37,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:20:37,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:20:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:20:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:20:37,499 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:20:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:20:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:20:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:20:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:20:37,500 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:20:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:20:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:20:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:20:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:20:37,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:20:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:20:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:20:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:20:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:20:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:20:37,504 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:20:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:20:37,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:20:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:20:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:20:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:20:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:20:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:20:37,507 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:20:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:20:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:20:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:20:37,508 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:20:37,509 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:20:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:20:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:20:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:20:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:20:37,510 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:20:37,511 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:20:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:20:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:20:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:20:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:20:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:20:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:20:37,514 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:20:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:20:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:20:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:20:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:20:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:20:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:20:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:20:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:20:37,517 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:20:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:20:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:20:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:20:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:20:37,518 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:20:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:20:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:20:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:20:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:20:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:20:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:20:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:20:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:20:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:20:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:20:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:20:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:20:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:20:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:20:37,522 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:20:37,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:20:37,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:20:37,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:20:38,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:20:38,119 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-08-22 22:20:38,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:38 BoogieIcfgContainer [2020-08-22 22:20:38,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:20:38,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:20:38,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:20:38,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:20:38,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:20:36" (1/3) ... [2020-08-22 22:20:38,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ceb928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:38, skipping insertion in model container [2020-08-22 22:20:38,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:37" (2/3) ... [2020-08-22 22:20:38,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ceb928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:38, skipping insertion in model container [2020-08-22 22:20:38,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:38" (3/3) ... [2020-08-22 22:20:38,133 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-08-22 22:20:38,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:20:38,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-22 22:20:38,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-22 22:20:38,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:20:38,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:20:38,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:20:38,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:20:38,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:20:38,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:20:38,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:20:38,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:20:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-08-22 22:20:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 22:20:38,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:38,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:38,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:38,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1234818853, now seen corresponding path program 1 times [2020-08-22 22:20:38,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:38,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226141823] [2020-08-22 22:20:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226141823] [2020-08-22 22:20:38,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:20:38,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346202964] [2020-08-22 22:20:38,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:20:38,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:20:38,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:38,511 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-08-22 22:20:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:38,791 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-08-22 22:20:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:20:38,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 22:20:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:38,803 INFO L225 Difference]: With dead ends: 149 [2020-08-22 22:20:38,803 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 22:20:38,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:38,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 22:20:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 22:20:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 22:20:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-08-22 22:20:38,855 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 17 [2020-08-22 22:20:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:38,855 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-08-22 22:20:38,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:20:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-08-22 22:20:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 22:20:38,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:38,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:38,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:20:38,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1418693445, now seen corresponding path program 1 times [2020-08-22 22:20:38,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:38,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774331933] [2020-08-22 22:20:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774331933] [2020-08-22 22:20:38,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:20:38,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758974508] [2020-08-22 22:20:38,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:20:38,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:20:38,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:38,986 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 6 states. [2020-08-22 22:20:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:39,207 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-08-22 22:20:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:20:39,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-22 22:20:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:39,210 INFO L225 Difference]: With dead ends: 94 [2020-08-22 22:20:39,210 INFO L226 Difference]: Without dead ends: 92 [2020-08-22 22:20:39,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-22 22:20:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-08-22 22:20:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 22:20:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-08-22 22:20:39,229 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 19 [2020-08-22 22:20:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:39,229 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-08-22 22:20:39,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:20:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-08-22 22:20:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 22:20:39,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:39,231 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] [2020-08-22 22:20:39,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:20:39,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -407334014, now seen corresponding path program 1 times [2020-08-22 22:20:39,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:39,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537432076] [2020-08-22 22:20:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:39,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537432076] [2020-08-22 22:20:39,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:39,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:39,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991572889] [2020-08-22 22:20:39,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:39,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:39,389 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 8 states. [2020-08-22 22:20:39,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:39,706 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-08-22 22:20:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:20:39,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-08-22 22:20:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:39,709 INFO L225 Difference]: With dead ends: 121 [2020-08-22 22:20:39,709 INFO L226 Difference]: Without dead ends: 118 [2020-08-22 22:20:39,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:20:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-08-22 22:20:39,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2020-08-22 22:20:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 22:20:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-08-22 22:20:39,730 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 23 [2020-08-22 22:20:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:39,731 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-08-22 22:20:39,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-08-22 22:20:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 22:20:39,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:39,733 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] [2020-08-22 22:20:39,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:20:39,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:39,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1213824752, now seen corresponding path program 1 times [2020-08-22 22:20:39,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:39,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72638314] [2020-08-22 22:20:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:39,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:39,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:39,820 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:20:39,821 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:20:39,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:20:39,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:20:39 BoogieIcfgContainer [2020-08-22 22:20:39,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:20:39,884 INFO L168 Benchmark]: Toolchain (without parser) took 3172.50 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 100.7 MB in the beginning and 91.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:39,885 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 22:20:39,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 644.05 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 100.5 MB in the beginning and 169.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:39,887 INFO L168 Benchmark]: Boogie Preprocessor took 74.99 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 166.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:39,888 INFO L168 Benchmark]: RCFGBuilder took 696.22 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 116.4 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:39,889 INFO L168 Benchmark]: TraceAbstraction took 1752.38 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 115.7 MB in the beginning and 91.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:39,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 644.05 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 100.5 MB in the beginning and 169.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.99 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 166.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 696.22 ms. Allocated memory is still 202.9 MB. Free memory was 166.2 MB in the beginning and 116.4 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1752.38 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 115.7 MB in the beginning and 91.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L996] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L997] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L999] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1023] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1024] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(BLACK == end->colour)) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1032] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1032] COND FALSE !(RED == end->colour) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND TRUE !(end->next) VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] __VERIFIER_error() VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 506 SDslu, 206 SDs, 0 SdLazy, 334 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 67 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 4396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...