/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:45:04,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:45:04,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:45:04,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:45:04,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:45:04,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:45:04,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:45:04,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:45:04,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:45:04,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:45:04,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:45:04,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:45:04,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:45:04,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:45:04,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:45:04,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:45:04,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:45:04,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:45:04,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:45:04,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:45:04,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:45:04,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:45:04,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:45:04,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:45:04,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:45:04,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:45:04,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:45:04,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:45:04,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:45:04,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:45:04,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:45:04,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:45:04,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:45:04,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:45:04,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:45:04,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:45:04,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:45:04,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:45:04,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:45:04,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:45:04,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:45:04,263 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 22:45:04,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:45:04,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:45:04,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:45:04,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:45:04,321 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:45:04,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:45:04,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:45:04,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:45:04,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:45:04,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:45:04,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:45:04,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:45:04,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:45:04,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:45:04,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:45:04,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:45:04,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:45:04,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:45:04,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:45:04,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:45:04,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:45:04,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:45:04,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:45:04,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:45:04,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:45:04,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:45:04,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:04,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:45:04,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:45:04,327 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 -> BIGGEST_EQUIVALENCE_CLASS 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 -> 4 [2020-07-21 22:45:04,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:45:04,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:45:04,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:45:04,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:45:04,813 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:45:04,814 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-07-21 22:45:04,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a90cf9f/e0abc8552857402ea2c89de3084c1b03/FLAG8ba764efe [2020-07-21 22:45:06,058 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:45:06,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-optional-2.i [2020-07-21 22:45:06,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a90cf9f/e0abc8552857402ea2c89de3084c1b03/FLAG8ba764efe [2020-07-21 22:45:06,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11a90cf9f/e0abc8552857402ea2c89de3084c1b03 [2020-07-21 22:45:06,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:45:06,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:45:06,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:45:06,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:45:06,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:45:06,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:45:06" (1/1) ... [2020-07-21 22:45:06,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759730b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:06, skipping insertion in model container [2020-07-21 22:45:06,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:45:06" (1/1) ... [2020-07-21 22:45:06,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:45:06,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:45:07,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:45:07,087 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:45:07,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:45:07,229 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:45:07,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07 WrapperNode [2020-07-21 22:45:07,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:45:07,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:45:07,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:45:07,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:45:07,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (1/1) ... [2020-07-21 22:45:07,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:45:07,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:45:07,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:45:07,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:45:07,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (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 22:45:07,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:45:07,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:45:07,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:45:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 22:45:07,454 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 22:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 22:45:07,455 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 22:45:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 22:45:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 22:45:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 22:45:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 22:45:07,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 22:45:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 22:45:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 22:45:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 22:45:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 22:45:07,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 22:45:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 22:45:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 22:45:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 22:45:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 22:45:07,458 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 22:45:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 22:45:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 22:45:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 22:45:07,459 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 22:45:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 22:45:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 22:45:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 22:45:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 22:45:07,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 22:45:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 22:45:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 22:45:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 22:45:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 22:45:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 22:45:07,461 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 22:45:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 22:45:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 22:45:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 22:45:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 22:45:07,462 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 22:45:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 22:45:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 22:45:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 22:45:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 22:45:07,463 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 22:45:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 22:45:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 22:45:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 22:45:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 22:45:07,464 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 22:45:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 22:45:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 22:45:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 22:45:07,465 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 22:45:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 22:45:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 22:45:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 22:45:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 22:45:07,466 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 22:45:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 22:45:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 22:45:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 22:45:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 22:45:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 22:45:07,467 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:45:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 22:45:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 22:45:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 22:45:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 22:45:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 22:45:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 22:45:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 22:45:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 22:45:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 22:45:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 22:45:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 22:45:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 22:45:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 22:45:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 22:45:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 22:45:07,470 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 22:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 22:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 22:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 22:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 22:45:07,471 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 22:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 22:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 22:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 22:45:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 22:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 22:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 22:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 22:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 22:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 22:45:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 22:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 22:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 22:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 22:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 22:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 22:45:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 22:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 22:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 22:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:45:07,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 22:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 22:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 22:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:45:07,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:45:07,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:45:07,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:45:08,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:45:08,513 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 22:45:08,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:45:08 BoogieIcfgContainer [2020-07-21 22:45:08,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:45:08,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:45:08,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:45:08,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:45:08,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:45:06" (1/3) ... [2020-07-21 22:45:08,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e1415b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:45:08, skipping insertion in model container [2020-07-21 22:45:08,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:07" (2/3) ... [2020-07-21 22:45:08,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e1415b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:45:08, skipping insertion in model container [2020-07-21 22:45:08,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:45:08" (3/3) ... [2020-07-21 22:45:08,541 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-optional-2.i [2020-07-21 22:45:08,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:45:08,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:45:08,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:45:08,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:45:08,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:45:08,656 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:45:08,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:45:08,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:45:08,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:45:08,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:45:08,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:45:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-21 22:45:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 22:45:08,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:08,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:08,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:08,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1877010449, now seen corresponding path program 1 times [2020-07-21 22:45:08,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:08,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445331892] [2020-07-21 22:45:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:45:09,003 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:45:09,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:09,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:45:09,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:09,095 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 22:45:09,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:09,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445331892] [2020-07-21 22:45:09,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:09,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:45:09,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620708022] [2020-07-21 22:45:09,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:45:09,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:45:09,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:45:09,145 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-07-21 22:45:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:09,188 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2020-07-21 22:45:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:45:09,191 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-21 22:45:09,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:09,209 INFO L225 Difference]: With dead ends: 49 [2020-07-21 22:45:09,210 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 22:45:09,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:45:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 22:45:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-21 22:45:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 22:45:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-07-21 22:45:09,281 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2020-07-21 22:45:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:09,282 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-07-21 22:45:09,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:45:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-07-21 22:45:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 22:45:09,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:09,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:45:09,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:09,499 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1827708973, now seen corresponding path program 1 times [2020-07-21 22:45:09,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:09,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656717534] [2020-07-21 22:45:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 22:45:09,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:09,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:45:09,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:45:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:45:09,737 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:45:09,783 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:45:09,784 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:45:10,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:10,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:45:10 BoogieIcfgContainer [2020-07-21 22:45:10,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:45:10,055 INFO L168 Benchmark]: Toolchain (without parser) took 3888.44 ms. Allocated memory was 136.3 MB in the beginning and 230.7 MB in the end (delta: 94.4 MB). Free memory was 99.6 MB in the beginning and 160.3 MB in the end (delta: -60.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:10,057 INFO L168 Benchmark]: CDTParser took 1.65 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:45:10,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1057.24 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 99.2 MB in the beginning and 169.2 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:10,059 INFO L168 Benchmark]: Boogie Preprocessor took 105.73 ms. Allocated memory is still 202.4 MB. Free memory was 169.2 MB in the beginning and 166.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:10,061 INFO L168 Benchmark]: RCFGBuilder took 1182.16 ms. Allocated memory is still 202.4 MB. Free memory was 166.4 MB in the beginning and 120.1 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:10,062 INFO L168 Benchmark]: TraceAbstraction took 1527.76 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 119.4 MB in the beginning and 160.3 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:45:10,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.65 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1057.24 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 99.2 MB in the beginning and 169.2 MB in the end (delta: -70.0 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.73 ms. Allocated memory is still 202.4 MB. Free memory was 169.2 MB in the beginning and 166.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1182.16 ms. Allocated memory is still 202.4 MB. Free memory was 166.4 MB in the beginning and 120.1 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1527.76 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 119.4 MB in the beginning and 160.3 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] COND TRUE __VERIFIER_nondet_int() [L987] head->data = 2 [L987] head->opt = malloc(sizeof(SLL)) [L987] EXPR head->opt [L987] head->opt->next = ((void*)0) [L988] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L990] COND FALSE !(__VERIFIER_nondet_int()) [L993] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L994] COND TRUE x != ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L996] EXPR x->data [L996] EXPR x->data == 2 && x->opt == x [L996] EXPR x->opt [L996] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={-2:0}] [L996] COND TRUE !(x->data == 2 && x->opt == x) [L996] __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, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 1 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...