java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:41:57,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:41:57,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:41:57,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:41:57,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:41:57,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:41:57,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:41:57,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:41:57,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:41:57,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:41:57,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:41:57,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:41:57,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:41:57,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:41:57,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:41:57,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:41:57,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:41:57,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:41:57,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:41:57,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:41:57,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:41:57,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:41:57,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:41:57,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:41:57,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:41:57,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:41:57,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:41:57,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:41:57,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:41:57,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:41:57,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:41:57,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:41:57,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:41:57,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:41:57,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:41:57,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:41:57,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:41:57,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:41:57,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:41:57,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:41:57,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:41:57,397 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 [2019-09-08 01:41:57,411 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:41:57,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:41:57,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:41:57,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:41:57,413 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:41:57,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:41:57,413 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:41:57,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:41:57,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:41:57,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:41:57,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:41:57,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:41:57,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:41:57,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:41:57,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:41:57,415 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:41:57,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:41:57,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:41:57,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:41:57,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:41:57,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:41:57,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:41:57,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:41:57,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:41:57,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:41:57,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:41:57,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:41:57,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:41:57,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:41:57,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:41:57,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:41:57,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:41:57,462 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:41:57,463 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:41:57,463 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i [2019-09-08 01:41:57,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b0b4990/8912b348d1f94f0fb08b6fc61f69d206/FLAG3d81cc134 [2019-09-08 01:41:58,064 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:41:58,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-optional-2.i [2019-09-08 01:41:58,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b0b4990/8912b348d1f94f0fb08b6fc61f69d206/FLAG3d81cc134 [2019-09-08 01:41:58,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b0b4990/8912b348d1f94f0fb08b6fc61f69d206 [2019-09-08 01:41:58,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:41:58,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:41:58,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:41:58,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:41:58,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:41:58,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:58,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d02a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58, skipping insertion in model container [2019-09-08 01:41:58,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:58,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:41:58,440 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:41:58,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:41:58,831 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:41:58,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:41:58,933 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:41:58,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58 WrapperNode [2019-09-08 01:41:58,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:41:58,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:41:58,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:41:58,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:41:58,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:58,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:58,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:58,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:58,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:59,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:59,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (1/1) ... [2019-09-08 01:41:59,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:41:59,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:41:59,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:41:59,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:41:59,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (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 [2019-09-08 01:41:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:41:59,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:41:59,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:41:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 01:41:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 01:41:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 01:41:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 01:41:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 01:41:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 01:41:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 01:41:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 01:41:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 01:41:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 01:41:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 01:41:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 01:41:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 01:41:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 01:41:59,091 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 01:41:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 01:41:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 01:41:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 01:41:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 01:41:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 01:41:59,092 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 01:41:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 01:41:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 01:41:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 01:41:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 01:41:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 01:41:59,093 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 01:41:59,094 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 01:41:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 01:41:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 01:41:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 01:41:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 01:41:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 01:41:59,095 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 01:41:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 01:41:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 01:41:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 01:41:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 01:41:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 01:41:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 01:41:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 01:41:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 01:41:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-08 01:41:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 01:41:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 01:41:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 01:41:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-08 01:41:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 01:41:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 01:41:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-08 01:41:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 01:41:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 01:41:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-08 01:41:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 01:41:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 01:41:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 01:41:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 01:41:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 01:41:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 01:41:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 01:41:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 01:41:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 01:41:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 01:41:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 01:41:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 01:41:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 01:41:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 01:41:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 01:41:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 01:41:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 01:41:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 01:41:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 01:41:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 01:41:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:41:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:41:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:41:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 01:41:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:41:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:41:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:41:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:41:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:41:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:41:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:41:59,709 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:41:59,710 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-08 01:41:59,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:41:59 BoogieIcfgContainer [2019-09-08 01:41:59,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:41:59,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:41:59,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:41:59,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:41:59,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:41:58" (1/3) ... [2019-09-08 01:41:59,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:41:59, skipping insertion in model container [2019-09-08 01:41:59,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:41:58" (2/3) ... [2019-09-08 01:41:59,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:41:59, skipping insertion in model container [2019-09-08 01:41:59,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:41:59" (3/3) ... [2019-09-08 01:41:59,719 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2019-09-08 01:41:59,728 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:41:59,736 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:41:59,753 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:41:59,781 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:41:59,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:41:59,781 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:41:59,781 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:41:59,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:41:59,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:41:59,782 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:41:59,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:41:59,782 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:41:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-09-08 01:41:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-08 01:41:59,805 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:41:59,806 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:41:59,808 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:41:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:41:59,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1877010449, now seen corresponding path program 1 times [2019-09-08 01:41:59,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:41:59,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:41:59,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:41:59,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:41:59,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:41:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:41:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:41:59,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:41:59,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:42:00,001 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:42:00,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:42:00,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:42:00,019 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-09-08 01:42:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:42:00,048 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2019-09-08 01:42:00,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:42:00,051 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-08 01:42:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:42:00,069 INFO L225 Difference]: With dead ends: 49 [2019-09-08 01:42:00,070 INFO L226 Difference]: Without dead ends: 22 [2019-09-08 01:42:00,077 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:42:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-08 01:42:00,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-08 01:42:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-08 01:42:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2019-09-08 01:42:00,144 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2019-09-08 01:42:00,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:42:00,145 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-09-08 01:42:00,145 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:42:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2019-09-08 01:42:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:42:00,147 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:42:00,147 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:42:00,148 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:42:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:42:00,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1827708973, now seen corresponding path program 1 times [2019-09-08 01:42:00,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:42:00,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:42:00,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:42:00,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:42:00,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:42:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:42:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:42:00,346 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:42:00,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:42:00 BoogieIcfgContainer [2019-09-08 01:42:00,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:42:00,380 INFO L168 Benchmark]: Toolchain (without parser) took 2010.98 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 88.3 MB in the beginning and 90.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 65.3 MB. Max. memory is 7.1 GB. [2019-09-08 01:42:00,381 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:42:00,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.10 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 87.9 MB in the beginning and 165.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:42:00,383 INFO L168 Benchmark]: Boogie Preprocessor took 87.46 ms. Allocated memory is still 200.3 MB. Free memory was 164.9 MB in the beginning and 162.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:42:00,384 INFO L168 Benchmark]: RCFGBuilder took 688.88 ms. Allocated memory is still 200.3 MB. Free memory was 162.1 MB in the beginning and 116.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:42:00,385 INFO L168 Benchmark]: TraceAbstraction took 664.94 ms. Allocated memory is still 200.3 MB. Free memory was 116.9 MB in the beginning and 90.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2019-09-08 01:42:00,389 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.7 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 565.10 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 87.9 MB in the beginning and 165.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.46 ms. Allocated memory is still 200.3 MB. Free memory was 164.9 MB in the beginning and 162.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 688.88 ms. Allocated memory is still 200.3 MB. Free memory was 162.1 MB in the beginning and 116.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 664.94 ms. Allocated memory is still 200.3 MB. Free memory was 116.9 MB in the beginning and 90.1 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 2 [L987] head->opt = malloc(sizeof(SLL)) [L987] EXPR head->opt [L987] head->opt->next = ((void*)0) [L988] SLL* x = head; VAL [head={2:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={2:0}, x={2:0}] [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head VAL [head={2:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={2:0}, x={2:0}] [L994] COND TRUE x != ((void*)0) VAL [head={2:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={2:0}, x={2:0}] [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] EXPR x->opt [L996] EXPR x->data == 2 && x->opt == x VAL [head={2:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={2:0}, x={2:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={1:0}] [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __VERIFIER_error() VAL [head={2:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={2:0}, x={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...