/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:22:53,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:22:53,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:22:53,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:22:53,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:22:53,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:22:53,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:22:53,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:22:53,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:22:53,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:22:53,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:22:53,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:22:53,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:22:53,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:22:53,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:22:53,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:22:53,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:22:53,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:22:53,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:22:53,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:22:53,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:22:53,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:22:53,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:22:53,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:22:53,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:22:53,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:22:53,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:22:53,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:22:53,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:22:53,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:22:53,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:22:53,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:22:53,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:22:53,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:22:53,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:22:53,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:22:53,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:22:53,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:22:53,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:22:53,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:22:53,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:22:53,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:22:53,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:22:53,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:22:53,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:22:53,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:22:53,257 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:22:53,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:22:53,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:22:53,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:22:53,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:22:53,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:22:53,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:22:53,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:22:53,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:22:53,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:22:53,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:22:53,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:22:53,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:22:53,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:22:53,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:22:53,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:22:53,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:22:53,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:53,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:22:53,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:22:53,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:22:53,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:22:53,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:53,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:22:53,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:22:53,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:22:53,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:22:53,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:22:53,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:22:53,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:22:53,603 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:22:53,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-21 16:22:53,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f644d94f/4c88cea52fa0468eb62d3b496c6c0acd/FLAG80ba073bf [2020-07-21 16:22:54,248 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:22:54,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-07-21 16:22:54,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f644d94f/4c88cea52fa0468eb62d3b496c6c0acd/FLAG80ba073bf [2020-07-21 16:22:54,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f644d94f/4c88cea52fa0468eb62d3b496c6c0acd [2020-07-21 16:22:54,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:22:54,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:22:54,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:54,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:22:54,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:22:54,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:54" (1/1) ... [2020-07-21 16:22:54,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5373ddac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:54, skipping insertion in model container [2020-07-21 16:22:54,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:54" (1/1) ... [2020-07-21 16:22:54,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:22:54,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:22:55,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:55,065 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:22:55,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:55,170 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:22:55,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55 WrapperNode [2020-07-21 16:22:55,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:55,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:22:55,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:22:55,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:22:55,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... [2020-07-21 16:22:55,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:22:55,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:22:55,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:22:55,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:22:55,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:22:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:22:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:22:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:22:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:22:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:22:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:22:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:22:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:22:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:22:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:22:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:22:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:22:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:22:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:22:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:22:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:22:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:22:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:22:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:22:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:22:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:22:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:22:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:22:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:22:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:22:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:22:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:22:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:22:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:22:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:22:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:22:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:22:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:22:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:22:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:22:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:22:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:22:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:22:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:22:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:22:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:22:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:22:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:22:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:22:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 16:22:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:22:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:22:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:22:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:22:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:22:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:22:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:22:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:22:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:22:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:22:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:22:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:22:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:22:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:22:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:22:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:22:55,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:22:55,852 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-07-21 16:22:55,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:55 BoogieIcfgContainer [2020-07-21 16:22:55,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:22:55,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:22:55,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:22:55,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:22:55,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:22:54" (1/3) ... [2020-07-21 16:22:55,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65adb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:55, skipping insertion in model container [2020-07-21 16:22:55,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:55" (2/3) ... [2020-07-21 16:22:55,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65adb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:55, skipping insertion in model container [2020-07-21 16:22:55,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:55" (3/3) ... [2020-07-21 16:22:55,872 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-07-21 16:22:55,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:22:55,892 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-21 16:22:55,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-21 16:22:55,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:22:55,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:22:55,929 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:22:55,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:22:55,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:22:55,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:22:55,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:22:55,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:22:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-07-21 16:22:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:22:55,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:55,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:55,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-07-21 16:22:55,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:55,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751536411] [2020-07-21 16:22:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:56,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:56,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:56,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:22:56,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:56,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751536411] [2020-07-21 16:22:56,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:56,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:22:56,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662377890] [2020-07-21 16:22:56,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:22:56,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:22:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:22:56,359 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-07-21 16:22:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:56,478 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-07-21 16:22:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:22:56,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 16:22:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:56,491 INFO L225 Difference]: With dead ends: 122 [2020-07-21 16:22:56,492 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 16:22:56,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:56,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 16:22:56,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-07-21 16:22:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 16:22:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-07-21 16:22:56,549 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 10 [2020-07-21 16:22:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:56,549 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-07-21 16:22:56,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:22:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-07-21 16:22:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 16:22:56,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:56,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:56,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:56,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-07-21 16:22:56,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:56,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062209268] [2020-07-21 16:22:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:56,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:22:56,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:22:56,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:22:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:22:56,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:22:56,953 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:22:56,954 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:22:57,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:57,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:22:57 BoogieIcfgContainer [2020-07-21 16:22:57,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:22:57,192 INFO L168 Benchmark]: Toolchain (without parser) took 2604.08 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 102.5 MB in the beginning and 155.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:57,192 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:22:57,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.66 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 170.5 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:57,194 INFO L168 Benchmark]: Boogie Preprocessor took 81.87 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 167.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:57,195 INFO L168 Benchmark]: RCFGBuilder took 604.99 ms. Allocated memory is still 203.4 MB. Free memory was 167.7 MB in the beginning and 122.1 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:57,196 INFO L168 Benchmark]: TraceAbstraction took 1328.78 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 121.4 MB in the beginning and 155.2 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:22:57,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory is still 121.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.66 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 170.5 MB in the end (delta: -68.4 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.87 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 167.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 604.99 ms. Allocated memory is still 203.4 MB. Free memory was 167.7 MB in the beginning and 122.1 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1328.78 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 121.4 MB in the beginning and 155.2 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1013] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1015] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 86 SDslu, 43 SDs, 0 SdLazy, 25 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 2 NumberOfNonLiveVariables, 61 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...