/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-b8ad66e [2020-10-24 01:08:38,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:08:38,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:08:38,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:08:38,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:08:38,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:08:38,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:08:38,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:08:38,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:08:38,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:08:38,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:08:38,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:08:38,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:08:38,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:08:38,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:08:38,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:08:38,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:08:38,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:08:38,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:08:38,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:08:38,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:08:38,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:08:38,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:08:38,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:08:38,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 01:08:38,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 01:08:38,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 01:08:38,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 01:08:38,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 01:08:38,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 01:08:38,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 01:08:38,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 01:08:38,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 01:08:38,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 01:08:38,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 01:08:38,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 01:08:38,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 01:08:38,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 01:08:38,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:08:38,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:08:38,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:08:38,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:08:38,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:08:38,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:08:38,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:08:38,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:08:38,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:08:38,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:08:38,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:08:38,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:08:38,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:08:38,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:08:38,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:08:38,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:08:38,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:08:38,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:08:38,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:08:38,171 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:08:38,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:08:38,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:08:38,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:08:38,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:08:38,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:08:38,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:08:38,174 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:08:38,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:08:38,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:08:38,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:08:38,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:08:38,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:08:38,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-10-24 01:08:38,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b58d7373/c7b3891591bd4d9d86da22523f06c49a/FLAG964781953 [2020-10-24 01:08:39,393 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:08:39,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-10-24 01:08:39,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b58d7373/c7b3891591bd4d9d86da22523f06c49a/FLAG964781953 [2020-10-24 01:08:39,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b58d7373/c7b3891591bd4d9d86da22523f06c49a [2020-10-24 01:08:39,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:08:39,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:08:39,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:08:39,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:08:39,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:08:39,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:08:39" (1/1) ... [2020-10-24 01:08:39,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260833e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:39, skipping insertion in model container [2020-10-24 01:08:39,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:08:39" (1/1) ... [2020-10-24 01:08:39,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:08:39,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:08:40,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:08:40,193 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:08:40,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:08:40,345 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:08:40,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40 WrapperNode [2020-10-24 01:08:40,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:08:40,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:08:40,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:08:40,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:08:40,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (1/1) ... [2020-10-24 01:08:40,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:08:40,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:08:40,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:08:40,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:08:40,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (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 [2020-10-24 01:08:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:08:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:08:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:08:40,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:08:40,528 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-24 01:08:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-24 01:08:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-24 01:08:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-24 01:08:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-24 01:08:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-24 01:08:40,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-24 01:08:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-24 01:08:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-24 01:08:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-24 01:08:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-24 01:08:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-24 01:08:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-24 01:08:40,531 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-24 01:08:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-24 01:08:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-24 01:08:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-24 01:08:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-24 01:08:40,532 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-24 01:08:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-24 01:08:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-24 01:08:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-24 01:08:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-24 01:08:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-24 01:08:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-24 01:08:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-24 01:08:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 01:08:40,536 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-24 01:08:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-24 01:08:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-24 01:08:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-24 01:08:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-24 01:08:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-24 01:08:40,537 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-24 01:08:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-24 01:08:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:08:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-24 01:08:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-24 01:08:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-24 01:08:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:08:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-24 01:08:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-24 01:08:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-24 01:08:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-24 01:08:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-24 01:08:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-24 01:08:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-24 01:08:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-24 01:08:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-24 01:08:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-24 01:08:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-24 01:08:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-24 01:08:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-24 01:08:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-24 01:08:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-24 01:08:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-24 01:08:40,542 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-24 01:08:40,543 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-24 01:08:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-24 01:08:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-24 01:08:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-24 01:08:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-24 01:08:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-24 01:08:40,544 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 01:08:40,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-24 01:08:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:08:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:08:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:08:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:08:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:08:41,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:08:41,196 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-24 01:08:41,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:41 BoogieIcfgContainer [2020-10-24 01:08:41,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:08:41,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:08:41,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:08:41,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:08:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:08:39" (1/3) ... [2020-10-24 01:08:41,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec772ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:08:41, skipping insertion in model container [2020-10-24 01:08:41,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:08:40" (2/3) ... [2020-10-24 01:08:41,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec772ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:08:41, skipping insertion in model container [2020-10-24 01:08:41,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:08:41" (3/3) ... [2020-10-24 01:08:41,211 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-10-24 01:08:41,223 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:08:41,229 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:08:41,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:08:41,270 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:08:41,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:08:41,270 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:08:41,270 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:08:41,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:08:41,271 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:08:41,271 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:08:41,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:08:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2020-10-24 01:08:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-24 01:08:41,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:08:41,301 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] [2020-10-24 01:08:41,302 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:08:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:08:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash -725034452, now seen corresponding path program 1 times [2020-10-24 01:08:41,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:08:41,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768411011] [2020-10-24 01:08:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:08:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:08:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:08:41,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768411011] [2020-10-24 01:08:41,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:08:41,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 01:08:41,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948457397] [2020-10-24 01:08:41,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 01:08:41,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:08:41,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 01:08:41,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:08:41,736 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 3 states. [2020-10-24 01:08:42,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:08:42,067 INFO L93 Difference]: Finished difference Result 166 states and 204 transitions. [2020-10-24 01:08:42,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 01:08:42,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-24 01:08:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:08:42,079 INFO L225 Difference]: With dead ends: 166 [2020-10-24 01:08:42,080 INFO L226 Difference]: Without dead ends: 80 [2020-10-24 01:08:42,084 INFO L677 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 [2020-10-24 01:08:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-24 01:08:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-24 01:08:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-24 01:08:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-10-24 01:08:42,136 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 24 [2020-10-24 01:08:42,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:08:42,136 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-10-24 01:08:42,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 01:08:42,137 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-10-24 01:08:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 01:08:42,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:08:42,138 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] [2020-10-24 01:08:42,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:08:42,139 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:08:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:08:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash -684282970, now seen corresponding path program 1 times [2020-10-24 01:08:42,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:08:42,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130964509] [2020-10-24 01:08:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:08:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:08:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:08:42,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130964509] [2020-10-24 01:08:42,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:08:42,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 01:08:42,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022392466] [2020-10-24 01:08:42,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 01:08:42,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:08:42,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 01:08:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 01:08:42,356 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 6 states. [2020-10-24 01:08:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:08:42,742 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2020-10-24 01:08:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:08:42,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-24 01:08:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:08:42,748 INFO L225 Difference]: With dead ends: 110 [2020-10-24 01:08:42,749 INFO L226 Difference]: Without dead ends: 106 [2020-10-24 01:08:42,752 INFO L677 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 [2020-10-24 01:08:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-24 01:08:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 79. [2020-10-24 01:08:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-24 01:08:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-24 01:08:42,792 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 26 [2020-10-24 01:08:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:08:42,796 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-24 01:08:42,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 01:08:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-24 01:08:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 01:08:42,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:08:42,798 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] [2020-10-24 01:08:42,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:08:42,799 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:08:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:08:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash -748613476, now seen corresponding path program 1 times [2020-10-24 01:08:42,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:08:42,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263414038] [2020-10-24 01:08:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:08:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:43,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:08:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:08:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:08:43,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263414038] [2020-10-24 01:08:43,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:08:43,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:08:43,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471379473] [2020-10-24 01:08:43,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:08:43,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:08:43,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:08:43,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:08:43,027 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 8 states. [2020-10-24 01:08:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:08:43,375 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2020-10-24 01:08:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 01:08:43,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-24 01:08:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:08:43,377 INFO L225 Difference]: With dead ends: 133 [2020-10-24 01:08:43,377 INFO L226 Difference]: Without dead ends: 128 [2020-10-24 01:08:43,378 INFO L677 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 [2020-10-24 01:08:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-24 01:08:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2020-10-24 01:08:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-24 01:08:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-10-24 01:08:43,397 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 30 [2020-10-24 01:08:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:08:43,397 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-10-24 01:08:43,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:08:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-10-24 01:08:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-24 01:08:43,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:08:43,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:08:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:08:43,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:08:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:08:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -2047094719, now seen corresponding path program 1 times [2020-10-24 01:08:43,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:08:43,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698446966] [2020-10-24 01:08:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:08:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:08:43,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:08:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:08:43,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:08:43,484 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 01:08:43,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 01:08:43,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:08:43,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:08:43 BoogieIcfgContainer [2020-10-24 01:08:43,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:08:43,556 INFO L168 Benchmark]: Toolchain (without parser) took 3830.70 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.2 MB in the beginning and 79.7 MB in the end (delta: 46.5 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:08:43,557 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:08:43,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.22 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 103.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:08:43,561 INFO L168 Benchmark]: Boogie Preprocessor took 103.24 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 132.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:08:43,563 INFO L168 Benchmark]: RCFGBuilder took 748.12 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 82.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-24 01:08:43,566 INFO L168 Benchmark]: TraceAbstraction took 2349.31 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 82.8 MB in the beginning and 79.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:08:43,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 613.22 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 103.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.24 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 132.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 748.12 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 82.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2349.31 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 82.8 MB in the beginning and 79.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 991]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1036] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1037] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1043] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1045] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1045] COND FALSE !(RED == end->colour) VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1051] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1051] COND TRUE !(end->next) VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1051] CALL reach_error() [L991] COND FALSE !(0) [L991] __assert_fail ("0", "dll-rb-cnstr_1-2.c", 11, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 526 SDslu, 251 SDs, 0 SdLazy, 397 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s 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=109occurred 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, 0.5s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 7742 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...