/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:56:17,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:56:17,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:56:17,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:56:17,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:56:17,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:56:17,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:56:17,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:56:17,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:56:17,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:56:17,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:56:17,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:56:17,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:56:17,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:56:17,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:56:17,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:56:17,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:56:17,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:56:17,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:56:17,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:56:17,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:56:17,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:56:17,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:56:17,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:56:17,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:56:17,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:56:17,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:56:17,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:56:17,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:56:17,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:56:17,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:56:17,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:56:17,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:56:17,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:56:17,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:56:17,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:56:17,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:56:17,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:56:17,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:56:17,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:56:17,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:56:17,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:56:17,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:56:17,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:56:17,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:56:17,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:56:17,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:56:17,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:56:17,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:56:17,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:56:17,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:56:17,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:56:17,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:56:17,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:56:17,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:56:17,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:56:17,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:56:17,168 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:56:17,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:56:17,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:56:17,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:56:17,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:56:17,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:56:17,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:56:17,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:56:17,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:56:17,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:56:17,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:56:17,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:56:17,547 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:56:17,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-11-07 00:56:17,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d75cbc31/e5ba230670dd40d7916322a94fdc5dea/FLAGb78d608eb [2020-11-07 00:56:18,263 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:56:18,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-11-07 00:56:18,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d75cbc31/e5ba230670dd40d7916322a94fdc5dea/FLAGb78d608eb [2020-11-07 00:56:18,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d75cbc31/e5ba230670dd40d7916322a94fdc5dea [2020-11-07 00:56:18,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:56:18,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:56:18,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:18,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:56:18,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:56:18,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:18" (1/1) ... [2020-11-07 00:56:18,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346d66b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:18, skipping insertion in model container [2020-11-07 00:56:18,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:18" (1/1) ... [2020-11-07 00:56:18,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:56:18,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:56:18,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:18,993 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:56:19,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:56:19,110 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:56:19,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19 WrapperNode [2020-11-07 00:56:19,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:56:19,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:56:19,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:56:19,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:56:19,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (1/1) ... [2020-11-07 00:56:19,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:56:19,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:56:19,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:56:19,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:56:19,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (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 [2020-11-07 00:56:19,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:56:19,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:56:19,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:56:19,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:56:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-07 00:56:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-07 00:56:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-07 00:56:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-07 00:56:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-07 00:56:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-07 00:56:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-07 00:56:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-07 00:56:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-07 00:56:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-07 00:56:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-07 00:56:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-07 00:56:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-07 00:56:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-07 00:56:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-07 00:56:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-07 00:56:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-07 00:56:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-07 00:56:19,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-07 00:56:19,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-07 00:56:19,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-07 00:56:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-07 00:56:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-07 00:56:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-07 00:56:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-07 00:56:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-07 00:56:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-07 00:56:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-07 00:56:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-07 00:56:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-07 00:56:19,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-07 00:56:19,309 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-07 00:56:19,310 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-07 00:56:19,311 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 00:56:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-07 00:56:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-07 00:56:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-07 00:56:19,312 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-07 00:56:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-07 00:56:19,313 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:56:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-07 00:56:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-07 00:56:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-07 00:56:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-07 00:56:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-07 00:56:19,314 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-07 00:56:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-07 00:56:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-07 00:56:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-07 00:56:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-07 00:56:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-07 00:56:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-07 00:56:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-07 00:56:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-07 00:56:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-07 00:56:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-07 00:56:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-07 00:56:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-07 00:56:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-07 00:56:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-07 00:56:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-07 00:56:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-07 00:56:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-07 00:56:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-07 00:56:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-07 00:56:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-07 00:56:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-07 00:56:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-07 00:56:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-07 00:56:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-07 00:56:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-07 00:56:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-07 00:56:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-07 00:56:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 00:56:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:56:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:56:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:56:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:56:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:56:19,951 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:56:19,952 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-07 00:56:19,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:19 BoogieIcfgContainer [2020-11-07 00:56:19,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:56:19,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:56:19,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:56:19,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:56:19,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:18" (1/3) ... [2020-11-07 00:56:19,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bac9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:19, skipping insertion in model container [2020-11-07 00:56:19,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:19" (2/3) ... [2020-11-07 00:56:19,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21bac9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:19, skipping insertion in model container [2020-11-07 00:56:19,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:19" (3/3) ... [2020-11-07 00:56:19,963 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-11-07 00:56:19,979 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:56:19,983 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:56:19,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:56:20,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:56:20,021 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:56:20,021 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:56:20,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:56:20,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:56:20,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:56:20,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:56:20,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:56:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-11-07 00:56:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-07 00:56:20,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:20,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:56:20,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:20,058 INFO L82 PathProgramCache]: Analyzing trace with hash 865716265, now seen corresponding path program 1 times [2020-11-07 00:56:20,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:20,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768054128] [2020-11-07 00:56:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:20,158 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:20,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768054128] [2020-11-07 00:56:20,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:20,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 00:56:20,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620755] [2020-11-07 00:56:20,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 00:56:20,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 00:56:20,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 00:56:20,364 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 3 states. [2020-11-07 00:56:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:20,606 INFO L93 Difference]: Finished difference Result 159 states and 197 transitions. [2020-11-07 00:56:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 00:56:20,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-07 00:56:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:20,635 INFO L225 Difference]: With dead ends: 159 [2020-11-07 00:56:20,635 INFO L226 Difference]: Without dead ends: 73 [2020-11-07 00:56:20,639 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 [2020-11-07 00:56:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-07 00:56:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-07 00:56:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-07 00:56:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-11-07 00:56:20,687 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 23 [2020-11-07 00:56:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:20,688 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-11-07 00:56:20,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 00:56:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-11-07 00:56:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 00:56:20,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:20,690 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] [2020-11-07 00:56:20,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:56:20,690 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:20,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:20,691 INFO L82 PathProgramCache]: Analyzing trace with hash -339226551, now seen corresponding path program 1 times [2020-11-07 00:56:20,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:20,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494759196] [2020-11-07 00:56:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:20,699 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:20,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494759196] [2020-11-07 00:56:20,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:20,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:56:20,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200836960] [2020-11-07 00:56:20,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:56:20,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:20,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:56:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:56:20,846 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 6 states. [2020-11-07 00:56:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:21,059 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-11-07 00:56:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:56:21,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-07 00:56:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:21,062 INFO L225 Difference]: With dead ends: 100 [2020-11-07 00:56:21,062 INFO L226 Difference]: Without dead ends: 96 [2020-11-07 00:56:21,064 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 [2020-11-07 00:56:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-07 00:56:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2020-11-07 00:56:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-07 00:56:21,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-11-07 00:56:21,082 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 25 [2020-11-07 00:56:21,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:21,082 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-11-07 00:56:21,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:56:21,082 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-11-07 00:56:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 00:56:21,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:21,084 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] [2020-11-07 00:56:21,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:56:21,084 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:21,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:21,085 INFO L82 PathProgramCache]: Analyzing trace with hash 794907135, now seen corresponding path program 1 times [2020-11-07 00:56:21,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:21,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706543105] [2020-11-07 00:56:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:21,091 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:56:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:56:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:56:21,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706543105] [2020-11-07 00:56:21,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:56:21,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 00:56:21,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166767347] [2020-11-07 00:56:21,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 00:56:21,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:56:21,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 00:56:21,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 00:56:21,245 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 8 states. [2020-11-07 00:56:21,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:56:21,625 INFO L93 Difference]: Finished difference Result 126 states and 135 transitions. [2020-11-07 00:56:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 00:56:21,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-07 00:56:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:56:21,632 INFO L225 Difference]: With dead ends: 126 [2020-11-07 00:56:21,632 INFO L226 Difference]: Without dead ends: 121 [2020-11-07 00:56:21,633 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 [2020-11-07 00:56:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-11-07 00:56:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2020-11-07 00:56:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-07 00:56:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2020-11-07 00:56:21,659 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 29 [2020-11-07 00:56:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:56:21,660 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2020-11-07 00:56:21,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 00:56:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2020-11-07 00:56:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 00:56:21,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:56:21,662 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] [2020-11-07 00:56:21,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:56:21,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:56:21,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:56:21,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2030752988, now seen corresponding path program 1 times [2020-11-07 00:56:21,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:56:21,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599917325] [2020-11-07 00:56:21,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:56:21,668 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:56:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:56:21,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:56:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:56:21,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:56:21,745 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:56:21,745 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:56:21,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:56:21,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:56:21 BoogieIcfgContainer [2020-11-07 00:56:21,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:56:21,767 INFO L168 Benchmark]: Toolchain (without parser) took 3183.54 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.0 MB in the beginning and 155.1 MB in the end (delta: -23.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:21,768 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.4 MB in the beginning and 129.1 MB in the end (delta: 255.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:21,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.48 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 109.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:21,770 INFO L168 Benchmark]: Boogie Preprocessor took 81.97 ms. Allocated memory is still 156.2 MB. Free memory was 109.5 MB in the beginning and 106.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:21,770 INFO L168 Benchmark]: RCFGBuilder took 758.82 ms. Allocated memory is still 156.2 MB. Free memory was 106.6 MB in the beginning and 93.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:56:21,771 INFO L168 Benchmark]: TraceAbstraction took 1808.86 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 93.6 MB in the beginning and 155.1 MB in the end (delta: -61.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:56:21,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.4 MB in the beginning and 129.1 MB in the end (delta: 255.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 518.48 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 109.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.97 ms. Allocated memory is still 156.2 MB. Free memory was 109.5 MB in the beginning and 106.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 758.82 ms. Allocated memory is still 156.2 MB. Free memory was 106.6 MB in the beginning and 93.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1808.86 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 93.6 MB in the beginning and 155.1 MB in the end (delta: -61.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 993]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1006] SLL* list = malloc(sizeof(SLL)); [L1007] list->next = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1034] end = ((void*)0) [L1035] end = list [L1038] COND FALSE !(!(((void*)0) != end)) [L1039] EXPR end->colour [L1039] COND FALSE !(!(BLACK == end->colour)) [L1041] COND TRUE ((void*)0) != end [L1043] EXPR end->colour [L1043] COND FALSE !(RED == end->colour) [L1049] EXPR end->next [L1049] COND TRUE !(end->next) [L1049] CALL reach_error() [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-cnstr_1-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 223 SDtfs, 493 SDslu, 238 SDs, 0 SdLazy, 356 SolverSat, 24 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=102occurred 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, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...