/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:09:06,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:09:06,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:09:06,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:09:06,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:09:06,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:09:06,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:09:06,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:09:06,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:09:06,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:09:06,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:09:06,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:09:06,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:09:06,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:09:06,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:09:06,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:09:06,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:09:06,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:09:06,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:09:06,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:09:06,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:09:06,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:09:06,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:09:06,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:09:06,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 01:09:06,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 01:09:06,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 01:09:06,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 01:09:06,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 01:09:06,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 01:09:06,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 01:09:06,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 01:09:06,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 01:09:06,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 01:09:06,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 01:09:06,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 01:09:06,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 01:09:06,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 01:09:06,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:09:06,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:09:06,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:09:06,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:09:06,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:09:06,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:09:06,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:09:06,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:09:06,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:09:06,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:09:06,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:09:06,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:09:06,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:09:06,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:09:06,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:09:06,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:09:06,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:09:06,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:09:06,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:09:06,301 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:09:06,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:09:06,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:09:06,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:09:06,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:09:06,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:09:06,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:09:06,302 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:09:06,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:09:06,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:09:06,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:09:06,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:09:06,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:09:06,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-10-24 01:09:06,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4c68d50/3ccbcd85db5b410a898ebe9eafdf5e30/FLAGdb96a07f4 [2020-10-24 01:09:07,422 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:09:07,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-10-24 01:09:07,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4c68d50/3ccbcd85db5b410a898ebe9eafdf5e30/FLAGdb96a07f4 [2020-10-24 01:09:07,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4c68d50/3ccbcd85db5b410a898ebe9eafdf5e30 [2020-10-24 01:09:07,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:09:07,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:09:07,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:09:07,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:09:07,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:09:07,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:09:07" (1/1) ... [2020-10-24 01:09:07,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282303ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:07, skipping insertion in model container [2020-10-24 01:09:07,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:09:07" (1/1) ... [2020-10-24 01:09:07,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:09:07,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:09:08,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:09:08,161 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:09:08,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:09:08,310 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:09:08,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08 WrapperNode [2020-10-24 01:09:08,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:09:08,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:09:08,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:09:08,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:09:08,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (1/1) ... [2020-10-24 01:09:08,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:09:08,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:09:08,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:09:08,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:09:08,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (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 [2020-10-24 01:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:09:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-24 01:09:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-24 01:09:08,497 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-24 01:09:08,498 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-24 01:09:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-24 01:09:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-24 01:09:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-24 01:09:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-24 01:09:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-24 01:09:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-24 01:09:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-24 01:09:08,501 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-24 01:09:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-24 01:09:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-24 01:09:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-24 01:09:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-24 01:09:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-24 01:09:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-24 01:09:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-24 01:09:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-24 01:09:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-24 01:09:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-24 01:09:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-24 01:09:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-24 01:09:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-24 01:09:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-24 01:09:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-24 01:09:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-24 01:09:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-24 01:09:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-24 01:09:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-24 01:09:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-24 01:09:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-24 01:09:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-24 01:09:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:09:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-24 01:09:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-24 01:09:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-24 01:09:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:09:08,508 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-24 01:09:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-24 01:09:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-24 01:09:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-24 01:09:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-24 01:09:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-24 01:09:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-24 01:09:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-24 01:09:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-24 01:09:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-24 01:09:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-24 01:09:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-24 01:09:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-24 01:09:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-24 01:09:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-24 01:09:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-24 01:09:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-24 01:09:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-24 01:09:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-24 01:09:08,512 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-24 01:09:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-24 01:09:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-24 01:09:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-24 01:09:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-24 01:09:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-24 01:09:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-24 01:09:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-24 01:09:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-24 01:09:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-24 01:09:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-24 01:09:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-24 01:09:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-24 01:09:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-24 01:09:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:09:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:09:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 01:09:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 01:09:08,515 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-24 01:09:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:09:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:09:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:09:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:09:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:09:09,160 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:09:09,160 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-24 01:09:09,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:09:09 BoogieIcfgContainer [2020-10-24 01:09:09,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:09:09,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:09:09,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:09:09,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:09:09,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:09:07" (1/3) ... [2020-10-24 01:09:09,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3469bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:09:09, skipping insertion in model container [2020-10-24 01:09:09,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:09:08" (2/3) ... [2020-10-24 01:09:09,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3469bfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:09:09, skipping insertion in model container [2020-10-24 01:09:09,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:09:09" (3/3) ... [2020-10-24 01:09:09,176 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-10-24 01:09:09,189 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:09:09,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:09:09,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:09:09,247 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:09:09,247 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:09:09,247 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:09:09,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:09:09,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:09:09,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:09:09,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:09:09,254 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:09:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-10-24 01:09:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 01:09:09,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:09:09,300 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] [2020-10-24 01:09:09,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:09:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:09:09,308 INFO L82 PathProgramCache]: Analyzing trace with hash 673351522, now seen corresponding path program 1 times [2020-10-24 01:09:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:09:09,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678249989] [2020-10-24 01:09:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:09:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:09:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:09:09,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678249989] [2020-10-24 01:09:09,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:09:09,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 01:09:09,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759831934] [2020-10-24 01:09:09,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 01:09:09,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:09:09,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 01:09:09,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:09:09,661 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2020-10-24 01:09:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:09:09,897 INFO L93 Difference]: Finished difference Result 183 states and 242 transitions. [2020-10-24 01:09:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 01:09:09,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-24 01:09:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:09:09,909 INFO L225 Difference]: With dead ends: 183 [2020-10-24 01:09:09,910 INFO L226 Difference]: Without dead ends: 84 [2020-10-24 01:09:09,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 01:09:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-24 01:09:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-24 01:09:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-24 01:09:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-24 01:09:09,965 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 28 [2020-10-24 01:09:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:09:09,966 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-24 01:09:09,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 01:09:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-24 01:09:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-24 01:09:09,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:09:09,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:09:09,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:09:09,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:09:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:09:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash -235842492, now seen corresponding path program 1 times [2020-10-24 01:09:09,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:09:09,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441104288] [2020-10-24 01:09:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:09:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:09:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:09:10,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441104288] [2020-10-24 01:09:10,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:09:10,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:09:10,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660443254] [2020-10-24 01:09:10,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:09:10,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:09:10,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:09:10,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:09:10,113 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 7 states. [2020-10-24 01:09:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:09:10,536 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-10-24 01:09:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 01:09:10,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-24 01:09:10,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:09:10,539 INFO L225 Difference]: With dead ends: 147 [2020-10-24 01:09:10,540 INFO L226 Difference]: Without dead ends: 143 [2020-10-24 01:09:10,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:09:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-24 01:09:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 83. [2020-10-24 01:09:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-24 01:09:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-10-24 01:09:10,555 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 29 [2020-10-24 01:09:10,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:09:10,556 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-10-24 01:09:10,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:09:10,556 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-10-24 01:09:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 01:09:10,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:09:10,557 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] [2020-10-24 01:09:10,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:09:10,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:09:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:09:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1019399234, now seen corresponding path program 1 times [2020-10-24 01:09:10,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:09:10,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969633432] [2020-10-24 01:09:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:09:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:09:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:09:10,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969633432] [2020-10-24 01:09:10,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:09:10,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 01:09:10,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782097498] [2020-10-24 01:09:10,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 01:09:10,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:09:10,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 01:09:10,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 01:09:10,704 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 6 states. [2020-10-24 01:09:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:09:11,011 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-10-24 01:09:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:09:11,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-24 01:09:11,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:09:11,013 INFO L225 Difference]: With dead ends: 143 [2020-10-24 01:09:11,013 INFO L226 Difference]: Without dead ends: 139 [2020-10-24 01:09:11,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:09:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-24 01:09:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 82. [2020-10-24 01:09:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-24 01:09:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2020-10-24 01:09:11,031 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 30 [2020-10-24 01:09:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:09:11,032 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2020-10-24 01:09:11,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 01:09:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2020-10-24 01:09:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 01:09:11,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:09:11,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:09:11,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:09:11,034 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:09:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:09:11,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1509271133, now seen corresponding path program 1 times [2020-10-24 01:09:11,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:09:11,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139042066] [2020-10-24 01:09:11,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:09:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:09:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:09:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:09:11,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139042066] [2020-10-24 01:09:11,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:09:11,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-24 01:09:11,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988899958] [2020-10-24 01:09:11,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 01:09:11,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:09:11,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 01:09:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:09:11,459 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand 13 states. [2020-10-24 01:09:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:09:12,243 INFO L93 Difference]: Finished difference Result 218 states and 237 transitions. [2020-10-24 01:09:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 01:09:12,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-24 01:09:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:09:12,245 INFO L225 Difference]: With dead ends: 218 [2020-10-24 01:09:12,245 INFO L226 Difference]: Without dead ends: 173 [2020-10-24 01:09:12,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-10-24 01:09:12,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-24 01:09:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 96. [2020-10-24 01:09:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-24 01:09:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2020-10-24 01:09:12,268 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 37 [2020-10-24 01:09:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:09:12,269 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2020-10-24 01:09:12,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 01:09:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2020-10-24 01:09:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 01:09:12,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:09:12,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:09:12,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:09:12,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:09:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:09:12,271 INFO L82 PathProgramCache]: Analyzing trace with hash -41132629, now seen corresponding path program 1 times [2020-10-24 01:09:12,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:09:12,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306820892] [2020-10-24 01:09:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:09:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:09:12,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:09:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 01:09:12,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 01:09:12,389 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 01:09:12,389 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 01:09:12,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:09:12,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:09:12 BoogieIcfgContainer [2020-10-24 01:09:12,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:09:12,431 INFO L168 Benchmark]: Toolchain (without parser) took 4698.34 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.3 MB in the beginning and 87.3 MB in the end (delta: 39.0 MB). Peak memory consumption was 70.7 MB. Max. memory is 8.0 GB. [2020-10-24 01:09:12,432 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 100.0 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:09:12,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 103.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:09:12,434 INFO L168 Benchmark]: Boogie Preprocessor took 62.92 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 101.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 01:09:12,434 INFO L168 Benchmark]: RCFGBuilder took 787.22 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 129.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:09:12,435 INFO L168 Benchmark]: TraceAbstraction took 3264.02 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.5 MB in the beginning and 87.3 MB in the end (delta: 41.2 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:09:12,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 100.0 MB in the end (delta: 67.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 572.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 103.9 MB in the end (delta: 21.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.92 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 101.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 787.22 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 129.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3264.02 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.5 MB in the beginning and 87.3 MB in the end (delta: 41.2 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1019] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1020] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1020] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1022] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1031] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1031] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "sll-token-1.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 368 SDtfs, 732 SDslu, 925 SDs, 0 SdLazy, 879 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred 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, 4 MinimizatonAttempts, 194 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 16983 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...