/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/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:07:27,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:07:27,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:07:28,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:07:28,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:07:28,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:07:28,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:07:28,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:07:28,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:07:28,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:07:28,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:07:28,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:07:28,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:07:28,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:07:28,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:07:28,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:07:28,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:07:28,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:07:28,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:07:28,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:07:28,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:07:28,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:07:28,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:07:28,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:07:28,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:07:28,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:07:28,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:07:28,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:07:28,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:07:28,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:07:28,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:07:28,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:07:28,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:07:28,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:07:28,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:07:28,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:07:28,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:07:28,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:07:28,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:07:28,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:07:28,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:07:28,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:07:28,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:07:28,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:07:28,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:07:28,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:07:28,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:07:28,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:07:28,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:07:28,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:07:28,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:07:28,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:07:28,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:07:28,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:07:28,108 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:07:28,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:07:28,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:07:28,109 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:07:28,109 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:07:28,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:07:28,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:28,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:07:28,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:07:28,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:07:28,110 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 [2020-09-04 22:07:28,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:07:28,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:07:28,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:07:28,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:07:28,582 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:07:28,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-09-04 22:07:28,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/093663931/b6db95b5f54044e1a4f2baf1c88edf37/FLAGb73ebc3ae [2020-09-04 22:07:29,269 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:07:29,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-09-04 22:07:29,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/093663931/b6db95b5f54044e1a4f2baf1c88edf37/FLAGb73ebc3ae [2020-09-04 22:07:29,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/093663931/b6db95b5f54044e1a4f2baf1c88edf37 [2020-09-04 22:07:29,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:07:29,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:07:29,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:29,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:07:29,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:07:29,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:29" (1/1) ... [2020-09-04 22:07:29,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332b72d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:29, skipping insertion in model container [2020-09-04 22:07:29,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:29" (1/1) ... [2020-09-04 22:07:29,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:07:29,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:07:30,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:30,129 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:07:30,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:30,261 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:07:30,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30 WrapperNode [2020-09-04 22:07:30,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:30,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:07:30,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:07:30,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:07:30,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... [2020-09-04 22:07:30,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:07:30,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:07:30,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:07:30,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:07:30,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 22:07:30,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:07:30,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:07:30,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:07:30,415 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:07:30,415 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:07:30,415 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:07:30,415 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:07:30,415 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:07:30,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:07:30,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:07:30,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:07:30,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:07:30,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:07:30,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:07:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:07:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:07:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:07:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:07:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:07:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:07:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:07:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:07:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:07:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:07:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:07:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:07:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:07:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:07:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:07:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:07:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:07:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:07:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:07:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:07:30,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:07:30,423 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:07:30,424 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:07:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:07:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:07:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:07:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:07:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:07:30,425 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:07:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:07:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:07:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:07:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:07:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:07:30,426 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:07:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:07:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:07:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:07:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:07:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:07:30,427 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:07:30,428 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:07:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:07:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:07:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:07:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:07:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:07:30,429 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:07:30,430 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:07:30,431 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:07:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:07:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:07:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:07:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:07:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:07:30,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 22:07:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:07:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 22:07:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:07:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:07:30,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:07:31,057 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:07:31,057 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-04 22:07:31,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:31 BoogieIcfgContainer [2020-09-04 22:07:31,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:07:31,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:07:31,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:07:31,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:07:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:07:29" (1/3) ... [2020-09-04 22:07:31,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c58a905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:31, skipping insertion in model container [2020-09-04 22:07:31,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:30" (2/3) ... [2020-09-04 22:07:31,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c58a905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:31, skipping insertion in model container [2020-09-04 22:07:31,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:31" (3/3) ... [2020-09-04 22:07:31,077 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-09-04 22:07:31,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:07:31,101 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-04 22:07:31,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-04 22:07:31,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:07:31,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:07:31,161 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:07:31,161 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:07:31,161 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:07:31,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:07:31,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:07:31,162 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:07:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-09-04 22:07:31,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 22:07:31,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:31,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:31,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:31,221 INFO L82 PathProgramCache]: Analyzing trace with hash -218973700, now seen corresponding path program 1 times [2020-09-04 22:07:31,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:31,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618521998] [2020-09-04 22:07:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:31,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618521998] [2020-09-04 22:07:31,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:31,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 22:07:31,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788570039] [2020-09-04 22:07:31,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 22:07:31,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 22:07:31,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:07:31,513 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 3 states. [2020-09-04 22:07:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:31,779 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2020-09-04 22:07:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 22:07:31,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 22:07:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:31,795 INFO L225 Difference]: With dead ends: 156 [2020-09-04 22:07:31,795 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 22:07:31,800 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 [2020-09-04 22:07:31,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 22:07:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-04 22:07:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 22:07:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-04 22:07:31,857 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 18 [2020-09-04 22:07:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:31,858 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-04 22:07:31,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 22:07:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-04 22:07:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 22:07:31,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:31,859 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] [2020-09-04 22:07:31,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:07:31,860 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:31,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1356448202, now seen corresponding path program 1 times [2020-09-04 22:07:31,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:31,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017022835] [2020-09-04 22:07:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:32,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017022835] [2020-09-04 22:07:32,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:32,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:07:32,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82048541] [2020-09-04 22:07:32,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:07:32,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:32,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:07:32,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:07:32,016 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 6 states. [2020-09-04 22:07:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:32,236 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-09-04 22:07:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 22:07:32,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-04 22:07:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:32,238 INFO L225 Difference]: With dead ends: 104 [2020-09-04 22:07:32,238 INFO L226 Difference]: Without dead ends: 102 [2020-09-04 22:07:32,240 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 [2020-09-04 22:07:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-04 22:07:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-09-04 22:07:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 22:07:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-04 22:07:32,260 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 20 [2020-09-04 22:07:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:32,260 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-04 22:07:32,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:07:32,261 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-04 22:07:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 22:07:32,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:32,262 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] [2020-09-04 22:07:32,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:07:32,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash 539652413, now seen corresponding path program 1 times [2020-09-04 22:07:32,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:32,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909443635] [2020-09-04 22:07:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:32,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909443635] [2020-09-04 22:07:32,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:32,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:32,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147963242] [2020-09-04 22:07:32,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:32,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:32,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:32,440 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-09-04 22:07:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:32,793 INFO L93 Difference]: Finished difference Result 128 states and 134 transitions. [2020-09-04 22:07:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 22:07:32,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-04 22:07:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:32,796 INFO L225 Difference]: With dead ends: 128 [2020-09-04 22:07:32,796 INFO L226 Difference]: Without dead ends: 125 [2020-09-04 22:07:32,797 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 [2020-09-04 22:07:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-04 22:07:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 83. [2020-09-04 22:07:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 22:07:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-09-04 22:07:32,818 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 24 [2020-09-04 22:07:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:32,819 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-09-04 22:07:32,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-09-04 22:07:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 22:07:32,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:32,821 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] [2020-09-04 22:07:32,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:07:32,821 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1498142901, now seen corresponding path program 1 times [2020-09-04 22:07:32,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:32,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545388810] [2020-09-04 22:07:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:32,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:32,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:32,913 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 22:07:32,913 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 22:07:32,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:07:32,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:07:32 BoogieIcfgContainer [2020-09-04 22:07:32,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:07:32,964 INFO L168 Benchmark]: Toolchain (without parser) took 3396.82 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 100.0 MB in the beginning and 82.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,965 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:07:32,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.74 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 169.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,967 INFO L168 Benchmark]: Boogie Preprocessor took 71.61 ms. Allocated memory is still 202.4 MB. Free memory was 169.3 MB in the beginning and 166.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,968 INFO L168 Benchmark]: RCFGBuilder took 732.08 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 115.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,969 INFO L168 Benchmark]: TraceAbstraction took 1891.51 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 114.3 MB in the beginning and 82.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.74 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 169.3 MB in the end (delta: -69.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.61 ms. Allocated memory is still 202.4 MB. Free memory was 169.3 MB in the beginning and 166.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 732.08 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 115.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1891.51 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 114.3 MB in the beginning and 82.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L996] list->prev = ((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}] [L1025] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1026] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] COND FALSE !(!(BLACK == end->colour)) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1032] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1034] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1034] COND FALSE !(RED == end->colour) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] COND TRUE !(end->next) VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] __VERIFIER_error() VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 539 SDslu, 219 SDs, 0 SdLazy, 375 SolverSat, 16 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=99occurred 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, 70 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 4775 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...