/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 0.1.25-3af5e1f [2020-09-04 16:41:48,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:41:48,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:41:48,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:41:48,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:41:48,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:41:48,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:41:48,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:41:48,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:41:48,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:41:48,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:41:48,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:41:48,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:41:48,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:41:48,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:41:48,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:41:48,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:41:48,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:41:48,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:41:48,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:41:48,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:41:48,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:41:48,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:41:48,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:41:48,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:41:48,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:41:48,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:41:48,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:41:48,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:41:48,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:41:48,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:41:48,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:41:48,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:41:48,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:41:48,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:41:48,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:41:48,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:41:48,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:41:48,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:41:48,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:41:48,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:41:48,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:41:48,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:41:48,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:41:48,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:41:48,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:41:48,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:41:48,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:41:48,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:41:48,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:41:48,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:41:48,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:41:48,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:41:48,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:41:48,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:41:48,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:41:48,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:41:48,673 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:41:48,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:41:48,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:41:48,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:48,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:41:48,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:41:48,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:41:48,675 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:41:49,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:41:49,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:41:49,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:41:49,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:41:49,235 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:41:49,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-09-04 16:41:49,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09c2bf0ca/b1a90e786edd4d4197d0e798b3852beb/FLAG6a98ad943 [2020-09-04 16:41:50,127 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:41:50,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-09-04 16:41:50,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09c2bf0ca/b1a90e786edd4d4197d0e798b3852beb/FLAG6a98ad943 [2020-09-04 16:41:50,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09c2bf0ca/b1a90e786edd4d4197d0e798b3852beb [2020-09-04 16:41:50,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:41:50,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:41:50,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:50,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:41:50,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:41:50,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:50" (1/1) ... [2020-09-04 16:41:50,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:50, skipping insertion in model container [2020-09-04 16:41:50,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:50" (1/1) ... [2020-09-04 16:41:50,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:41:50,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:41:51,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:51,081 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:41:51,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:51,206 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:41:51,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51 WrapperNode [2020-09-04 16:41:51,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:51,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:41:51,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:41:51,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:41:51,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... [2020-09-04 16:41:51,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:41:51,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:41:51,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:41:51,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:41:51,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:41:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:41:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:41:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:41:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:41:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:41:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:41:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:41:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:41:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:41:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:41:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:41:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:41:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:41:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:41:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:41:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:41:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:41:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:41:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:41:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:41:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:41:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:41:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:41:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:41:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:41:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:41:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:41:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:41:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:41:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:41:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:41:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:41:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:41:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:41:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:41:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:41:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:41:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:41:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:41:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:41:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:41:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:41:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:41:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:41:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:41:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:41:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:41:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:41:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:41:51,415 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:41:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:41:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:41:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:41:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:41:51,416 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:41:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:41:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:41:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:41:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:41:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:41:51,417 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:41:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:41:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:41:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:41:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:41:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:41:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:41:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:41:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:41:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:41:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:41:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:41:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:41:51,420 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:41:51,420 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:41:51,420 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:41:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:41:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:41:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:41:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:41:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:41:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:41:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:41:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:41:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:41:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:41:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:41:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:41:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:41:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:41:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:41:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:41:52,208 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:41:52,209 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 16:41:52,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:52 BoogieIcfgContainer [2020-09-04 16:41:52,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:41:52,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:41:52,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:41:52,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:41:52,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:41:50" (1/3) ... [2020-09-04 16:41:52,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40048cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:52, skipping insertion in model container [2020-09-04 16:41:52,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:51" (2/3) ... [2020-09-04 16:41:52,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40048cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:52, skipping insertion in model container [2020-09-04 16:41:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:52" (3/3) ... [2020-09-04 16:41:52,241 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2020-09-04 16:41:52,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:41:52,274 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:41:52,304 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:41:52,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:41:52,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:41:52,352 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:41:52,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:41:52,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:41:52,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:41:52,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:41:52,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:41:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-09-04 16:41:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 16:41:52,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:52,421 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] [2020-09-04 16:41:52,422 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1919098423, now seen corresponding path program 1 times [2020-09-04 16:41:52,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:52,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792310698] [2020-09-04 16:41:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:52,577 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:52,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792310698] [2020-09-04 16:41:52,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:52,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:41:52,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342949202] [2020-09-04 16:41:52,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:41:52,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:52,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:41:52,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:41:52,858 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-09-04 16:41:53,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:53,256 INFO L93 Difference]: Finished difference Result 135 states and 157 transitions. [2020-09-04 16:41:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:41:53,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 16:41:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:53,280 INFO L225 Difference]: With dead ends: 135 [2020-09-04 16:41:53,281 INFO L226 Difference]: Without dead ends: 77 [2020-09-04 16:41:53,287 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 [2020-09-04 16:41:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-04 16:41:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-04 16:41:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 16:41:53,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-09-04 16:41:53,364 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 30 [2020-09-04 16:41:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:53,365 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-09-04 16:41:53,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:41:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-09-04 16:41:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 16:41:53,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:53,368 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] [2020-09-04 16:41:53,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:41:53,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:53,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:53,369 INFO L82 PathProgramCache]: Analyzing trace with hash -493967776, now seen corresponding path program 1 times [2020-09-04 16:41:53,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:53,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849359947] [2020-09-04 16:41:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:53,376 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:53,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:53,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:53,555 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:41:53,555 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:41:53,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:41:53,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:41:53 BoogieIcfgContainer [2020-09-04 16:41:53,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:41:53,589 INFO L168 Benchmark]: Toolchain (without parser) took 3162.95 ms. Allocated memory was 136.3 MB in the beginning and 227.0 MB in the end (delta: 90.7 MB). Free memory was 98.8 MB in the beginning and 172.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:53,590 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:41:53,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.08 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 166.7 MB in the end (delta: -68.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:53,592 INFO L168 Benchmark]: Boogie Preprocessor took 105.16 ms. Allocated memory is still 199.8 MB. Free memory was 166.7 MB in the beginning and 163.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:53,594 INFO L168 Benchmark]: RCFGBuilder took 908.77 ms. Allocated memory is still 199.8 MB. Free memory was 163.1 MB in the beginning and 111.5 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:53,595 INFO L168 Benchmark]: TraceAbstraction took 1359.70 ms. Allocated memory was 199.8 MB in the beginning and 227.0 MB in the end (delta: 27.3 MB). Free memory was 111.5 MB in the beginning and 172.7 MB in the end (delta: -61.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:41:53,599 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.08 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 166.7 MB in the end (delta: -68.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.16 ms. Allocated memory is still 199.8 MB. Free memory was 166.7 MB in the beginning and 163.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 908.77 ms. Allocated memory is still 199.8 MB. Free memory was 163.1 MB in the beginning and 111.5 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1359.70 ms. Allocated memory was 199.8 MB in the beginning and 227.0 MB in the end (delta: 27.3 MB). Free memory was 111.5 MB in the beginning and 172.7 MB in the end (delta: -61.2 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.2s 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...