/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:06:38,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:38,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:38,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:38,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:38,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:38,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:38,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:38,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:38,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:38,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:38,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:38,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:38,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:38,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:38,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:38,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:38,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:38,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:38,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:38,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:38,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:38,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:38,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:38,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:38,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:38,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:38,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:38,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:38,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:38,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:38,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:38,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:38,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:38,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:38,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:38,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:38,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:38,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:38,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:38,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:38,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:06:38,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:38,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:38,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:38,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:38,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:38,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:38,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:38,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:38,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:38,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:38,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:38,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:38,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:38,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:38,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:38,490 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:38,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:38,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:38,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:38,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:38,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:38,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:38,492 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:06:38,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:06:38,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:06:38,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:06:38,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:06:38,814 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:06:38,814 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-08-22 19:06:38,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b7d89d8/2e79d4bd0fdb43cea6db448c18033dd2/FLAGa312fe631 [2020-08-22 19:06:39,450 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:06:39,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-08-22 19:06:39,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b7d89d8/2e79d4bd0fdb43cea6db448c18033dd2/FLAGa312fe631 [2020-08-22 19:06:39,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b7d89d8/2e79d4bd0fdb43cea6db448c18033dd2 [2020-08-22 19:06:39,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:06:39,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:06:39,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:39,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:06:39,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:06:39,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:39" (1/1) ... [2020-08-22 19:06:39,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b53cc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:39, skipping insertion in model container [2020-08-22 19:06:39,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:39" (1/1) ... [2020-08-22 19:06:39,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:06:39,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:06:40,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:40,205 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:06:40,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:40,309 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:06:40,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40 WrapperNode [2020-08-22 19:06:40,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:40,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:06:40,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:06:40,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:06:40,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... [2020-08-22 19:06:40,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:06:40,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:06:40,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:06:40,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:06:40,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:06:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:06:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:06:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:06:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:06:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:06:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:06:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:06:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:06:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:06:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:06:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:06:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:06:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:06:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:06:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:06:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:06:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:06:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:06:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:06:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:06:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:06:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:06:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:06:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:06:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:06:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:06:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:06:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:06:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:06:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:06:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:06:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:06:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:06:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:06:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:06:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:06:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:06:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:06:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:06:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:06:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:06:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:06:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:06:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:06:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:06:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:06:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:06:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:06:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:06:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:06:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:06:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:06:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:06:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:06:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:06:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:06:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:06:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:06:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:06:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:06:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:06:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:06:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:06:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:06:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:06:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:06:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:06:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:06:41,050 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:06:41,051 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 19:06:41,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:41 BoogieIcfgContainer [2020-08-22 19:06:41,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:06:41,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:06:41,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:06:41,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:06:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:06:39" (1/3) ... [2020-08-22 19:06:41,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592f8869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:41, skipping insertion in model container [2020-08-22 19:06:41,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:40" (2/3) ... [2020-08-22 19:06:41,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592f8869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:41, skipping insertion in model container [2020-08-22 19:06:41,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:41" (3/3) ... [2020-08-22 19:06:41,063 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2020-08-22 19:06:41,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:06:41,081 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:06:41,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:06:41,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:06:41,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:06:41,116 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:06:41,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:06:41,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:06:41,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:06:41,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:06:41,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:06:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-08-22 19:06:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:06:41,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:41,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:41,147 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:41,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1919098423, now seen corresponding path program 1 times [2020-08-22 19:06:41,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:41,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089037328] [2020-08-22 19:06:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:41,242 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:41,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089037328] [2020-08-22 19:06:41,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:41,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:06:41,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288216297] [2020-08-22 19:06:41,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:06:41,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:41,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:06:41,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:06:41,412 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-08-22 19:06:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:41,633 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2020-08-22 19:06:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:06:41,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-22 19:06:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:41,647 INFO L225 Difference]: With dead ends: 135 [2020-08-22 19:06:41,647 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 19:06:41,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:06:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 19:06:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-08-22 19:06:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-22 19:06:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-08-22 19:06:41,697 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 30 [2020-08-22 19:06:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:41,698 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-08-22 19:06:41,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:06:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-08-22 19:06:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 19:06:41,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:41,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:41,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:06:41,700 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash -493967776, now seen corresponding path program 1 times [2020-08-22 19:06:41,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:41,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437853750] [2020-08-22 19:06:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:41,705 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:41,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:06:41,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:06:41,788 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:06:41,788 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:06:41,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:06:41,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:06:41 BoogieIcfgContainer [2020-08-22 19:06:41,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:06:41,813 INFO L168 Benchmark]: Toolchain (without parser) took 2049.53 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.5 MB in the beginning and 171.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,815 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.35 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 170.3 MB in the end (delta: -67.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,817 INFO L168 Benchmark]: Boogie Preprocessor took 64.62 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,817 INFO L168 Benchmark]: RCFGBuilder took 679.78 ms. Allocated memory is still 203.9 MB. Free memory was 167.6 MB in the beginning and 115.8 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:41,818 INFO L168 Benchmark]: TraceAbstraction took 754.12 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 115.2 MB in the beginning and 171.4 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:06:41,822 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 546.35 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 170.3 MB in the end (delta: -67.0 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.62 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 679.78 ms. Allocated memory is still 203.9 MB. Free memory was 167.6 MB in the beginning and 115.8 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 754.12 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 115.2 MB in the beginning and 171.4 MB in the end (delta: -56.3 MB). There was no memory consumed. 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 FALSE !(__VERIFIER_nondet_int()) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 1 [L987] head->opt = head [L988] SLL* x = head; [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head [L994] COND TRUE x != ((void*)0) [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 98 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred 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: 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...