/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:31:38,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:31:38,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:31:38,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:31:38,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:31:38,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:31:38,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:31:38,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:31:38,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:31:38,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:31:38,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:31:38,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:31:38,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:31:38,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:31:38,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:31:38,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:31:38,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:31:38,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:31:38,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:31:38,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:31:38,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:31:38,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:31:38,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:31:38,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:31:38,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:31:38,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:31:38,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:31:38,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:31:38,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:31:38,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:31:38,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:31:38,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:31:38,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:31:38,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:31:38,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:31:38,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:31:38,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:31:38,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:31:38,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:31:38,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:31:38,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:31:38,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:31:38,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:31:38,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:31:38,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:31:38,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:31:38,389 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:31:38,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:31:38,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:31:38,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:31:38,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:31:38,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:31:38,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:31:38,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:31:38,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:31:38,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:31:38,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:31:38,391 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:31:38,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:31:38,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:31:38,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:31:38,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:31:38,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:31:38,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:38,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:31:38,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:31:38,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:31:38,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:31:38,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:38,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:31:38,395 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:31:38,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:31:38,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:31:38,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:31:38,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:31:38,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:31:38,845 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:31:38,847 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue-2.i [2020-07-20 11:31:38,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a560e7a/a329f583f49e4af682be3fd3130408d6/FLAGb130be602 [2020-07-20 11:31:39,908 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:31:39,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-simple-white-blue-2.i [2020-07-20 11:31:39,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a560e7a/a329f583f49e4af682be3fd3130408d6/FLAGb130be602 [2020-07-20 11:31:40,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1a560e7a/a329f583f49e4af682be3fd3130408d6 [2020-07-20 11:31:40,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:31:40,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:31:40,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:40,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:31:40,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:31:40,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:40" (1/1) ... [2020-07-20 11:31:40,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eafe90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:40, skipping insertion in model container [2020-07-20 11:31:40,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:40" (1/1) ... [2020-07-20 11:31:40,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:31:40,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:31:40,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:41,022 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:31:41,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:41,192 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:31:41,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41 WrapperNode [2020-07-20 11:31:41,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:41,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:31:41,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:31:41,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:31:41,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... [2020-07-20 11:31:41,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:31:41,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:31:41,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:31:41,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:31:41,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:41,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:31:41,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:31:41,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:31:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 11:31:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 11:31:41,399 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 11:31:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 11:31:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 11:31:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 11:31:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 11:31:41,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 11:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 11:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 11:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 11:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 11:31:41,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 11:31:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 11:31:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 11:31:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 11:31:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 11:31:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 11:31:41,402 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 11:31:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 11:31:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 11:31:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 11:31:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 11:31:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 11:31:41,403 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 11:31:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 11:31:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 11:31:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 11:31:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 11:31:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 11:31:41,404 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 11:31:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 11:31:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 11:31:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 11:31:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 11:31:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 11:31:41,405 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 11:31:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 11:31:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 11:31:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 11:31:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 11:31:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 11:31:41,406 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 11:31:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 11:31:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 11:31:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 11:31:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 11:31:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 11:31:41,407 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 11:31:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 11:31:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:31:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:31:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:31:41,408 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:31:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 11:31:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 11:31:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:31:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 11:31:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 11:31:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:31:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 11:31:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 11:31:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 11:31:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:31:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 11:31:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 11:31:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 11:31:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 11:31:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 11:31:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 11:31:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 11:31:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 11:31:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 11:31:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 11:31:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 11:31:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 11:31:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 11:31:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 11:31:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 11:31:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 11:31:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 11:31:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 11:31:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 11:31:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 11:31:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 11:31:41,414 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 11:31:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 11:31:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 11:31:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 11:31:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 11:31:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 11:31:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 11:31:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 11:31:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 11:31:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 11:31:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 11:31:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 11:31:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 11:31:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 11:31:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 11:31:41,417 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 11:31:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 11:31:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 11:31:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:31:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:31:41,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:31:41,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:31:41,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:31:42,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:31:42,313 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-20 11:31:42,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:42 BoogieIcfgContainer [2020-07-20 11:31:42,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:31:42,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:31:42,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:31:42,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:31:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:31:40" (1/3) ... [2020-07-20 11:31:42,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f155063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:42, skipping insertion in model container [2020-07-20 11:31:42,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:41" (2/3) ... [2020-07-20 11:31:42,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f155063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:42, skipping insertion in model container [2020-07-20 11:31:42,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:42" (3/3) ... [2020-07-20 11:31:42,332 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-2.i [2020-07-20 11:31:42,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:31:42,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:31:42,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:31:42,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:31:42,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:31:42,420 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:31:42,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:31:42,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:31:42,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:31:42,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:31:42,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:31:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-20 11:31:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 11:31:42,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:42,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:42,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:42,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1759752198, now seen corresponding path program 1 times [2020-07-20 11:31:42,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:42,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007494852] [2020-07-20 11:31:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:42,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:31:42,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:42,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:42,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007494852] [2020-07-20 11:31:42,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:42,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:31:42,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79624891] [2020-07-20 11:31:42,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:31:42,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:42,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:31:42,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:42,891 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-07-20 11:31:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:42,999 INFO L93 Difference]: Finished difference Result 53 states and 80 transitions. [2020-07-20 11:31:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:31:43,002 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-20 11:31:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:43,032 INFO L225 Difference]: With dead ends: 53 [2020-07-20 11:31:43,033 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 11:31:43,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 11:31:43,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 11:31:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 11:31:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2020-07-20 11:31:43,128 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 15 [2020-07-20 11:31:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:43,130 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2020-07-20 11:31:43,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:31:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2020-07-20 11:31:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:31:43,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:43,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:43,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:43,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:43,351 INFO L82 PathProgramCache]: Analyzing trace with hash -666433660, now seen corresponding path program 1 times [2020-07-20 11:31:43,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:43,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914197402] [2020-07-20 11:31:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:31:43,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:31:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:31:43,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:31:43,609 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:31:43,610 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:31:43,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:43,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:31:43 BoogieIcfgContainer [2020-07-20 11:31:43,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:31:43,929 INFO L168 Benchmark]: Toolchain (without parser) took 3777.25 ms. Allocated memory was 135.8 MB in the beginning and 229.6 MB in the end (delta: 93.8 MB). Free memory was 99.7 MB in the beginning and 162.6 MB in the end (delta: -62.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:43,932 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 11:31:43,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1040.54 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 99.5 MB in the beginning and 169.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:43,937 INFO L168 Benchmark]: Boogie Preprocessor took 106.72 ms. Allocated memory is still 201.9 MB. Free memory was 169.8 MB in the beginning and 166.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:43,939 INFO L168 Benchmark]: RCFGBuilder took 1016.83 ms. Allocated memory is still 201.9 MB. Free memory was 166.8 MB in the beginning and 121.2 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:43,942 INFO L168 Benchmark]: TraceAbstraction took 1603.20 ms. Allocated memory was 201.9 MB in the beginning and 229.6 MB in the end (delta: 27.8 MB). Free memory was 120.5 MB in the beginning and 162.6 MB in the end (delta: -42.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:31:43,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1040.54 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 99.5 MB in the beginning and 169.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.72 ms. Allocated memory is still 201.9 MB. Free memory was 169.8 MB in the beginning and 166.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1016.83 ms. Allocated memory is still 201.9 MB. Free memory was 166.8 MB in the beginning and 121.2 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1603.20 ms. Allocated memory was 201.9 MB in the beginning and 229.6 MB in the end (delta: 27.8 MB). Free memory was 120.5 MB in the beginning and 162.6 MB in the end (delta: -42.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1042]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L988] SLL* head = malloc(sizeof(SLL)); [L989] head->next = ((void*)0) [L990] head->data = 0 [L992] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L1005] COND TRUE __VERIFIER_nondet_int() [L1006] x = malloc(sizeof(SLL)) [L1007] x->data = 1 [L1008] x->next = head [L1009] head = x VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1029] x = head VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}] [L1032] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-2:0}, x->data=1] [L1032] COND FALSE !(x->data != 1) [L1038] EXPR x->next [L1038] x = x->next [L1039] COND TRUE \read(*x) [L1041] EXPR x->data VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=0] [L1041] COND TRUE x->data != 1 [L1042] __VERIFIER_error() VAL [head={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...