/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/dll-optional-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:22:05,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:22:05,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:22:05,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:22:05,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:22:05,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:22:05,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:22:05,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:22:05,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:22:05,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:22:05,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:22:05,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:22:05,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:22:05,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:22:05,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:22:05,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:22:05,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:22:05,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:22:05,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:22:05,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:22:05,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:22:05,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:22:05,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:22:05,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:22:05,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:22:05,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:22:05,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:22:05,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:22:05,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:22:05,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:22:05,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:22:05,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:22:05,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:22:05,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:22:05,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:22:05,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:22:05,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:22:05,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:22:05,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:22:05,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:22:05,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:22:05,153 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 16:22:05,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:22:05,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:22:05,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:22:05,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:22:05,195 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:22:05,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:22:05,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:22:05,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:22:05,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:22:05,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:22:05,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:22:05,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:22:05,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:22:05,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:22:05,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:22:05,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:22:05,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:22:05,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:22:05,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:22:05,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:22:05,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:22:05,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:05,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:22:05,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:22:05,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:22:05,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:22:05,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:05,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:22:05,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:22:05,202 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 16:22:05,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:22:05,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:22:05,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:22:05,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:22:05,530 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:22:05,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional-2.i [2020-07-21 16:22:05,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b7008fa/7a7e1e0eaabe42dc81645c0df97f96d9/FLAG1ae5883f4 [2020-07-21 16:22:06,236 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:22:06,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-optional-2.i [2020-07-21 16:22:06,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b7008fa/7a7e1e0eaabe42dc81645c0df97f96d9/FLAG1ae5883f4 [2020-07-21 16:22:06,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b7008fa/7a7e1e0eaabe42dc81645c0df97f96d9 [2020-07-21 16:22:06,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:22:06,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:22:06,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:06,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:22:06,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:22:06,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:06" (1/1) ... [2020-07-21 16:22:06,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bc8c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:06, skipping insertion in model container [2020-07-21 16:22:06,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:06" (1/1) ... [2020-07-21 16:22:06,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:22:06,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:22:07,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:07,163 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:22:07,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:07,292 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:22:07,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07 WrapperNode [2020-07-21 16:22:07,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:07,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:22:07,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:22:07,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:22:07,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (1/1) ... [2020-07-21 16:22:07,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:22:07,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:22:07,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:22:07,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:22:07,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (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 16:22:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:22:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:22:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:22:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:22:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:22:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:22:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:22:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:22:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:22:07,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:22:07,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:22:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:22:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:22:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:22:07,488 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:22:07,489 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:22:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:22:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:22:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:22:07,490 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:22:07,491 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:22:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:22:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:22:07,492 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:22:07,494 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:22:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:22:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:22:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:22:07,495 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:22:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:22:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:22:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:22:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:22:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:22:07,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:22:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:22:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:22:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:22:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:22:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:22:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:22:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:22:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:22:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:22:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:22:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:22:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:22:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:22:07,501 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:22:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:22:07,502 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:22:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 16:22:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:22:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:22:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:22:07,503 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:22:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:22:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:22:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:22:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:22:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:22:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:22:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:22:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:22:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:22:07,508 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:22:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:22:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:22:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:22:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:22:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:22:07,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:22:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:22:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:22:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:22:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:22:07,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:22:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:22:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:22:07,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:22:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:22:07,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:22:08,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:22:08,127 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 16:22:08,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:08 BoogieIcfgContainer [2020-07-21 16:22:08,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:22:08,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:22:08,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:22:08,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:22:08,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:22:06" (1/3) ... [2020-07-21 16:22:08,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e770bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:08, skipping insertion in model container [2020-07-21 16:22:08,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:07" (2/3) ... [2020-07-21 16:22:08,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e770bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:08, skipping insertion in model container [2020-07-21 16:22:08,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:08" (3/3) ... [2020-07-21 16:22:08,144 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2020-07-21 16:22:08,157 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:22:08,166 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:22:08,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:22:08,207 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:22:08,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:22:08,207 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:22:08,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:22:08,207 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:22:08,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:22:08,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:22:08,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:22:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-21 16:22:08,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 16:22:08,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:08,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:08,236 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:08,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:08,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1877010449, now seen corresponding path program 1 times [2020-07-21 16:22:08,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:08,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043977459] [2020-07-21 16:22:08,252 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 16:22:08,565 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:22:08,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:08,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:22:08,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:08,610 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 16:22:08,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:08,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043977459] [2020-07-21 16:22:08,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:08,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:22:08,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526562724] [2020-07-21 16:22:08,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:22:08,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:08,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:22:08,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:22:08,644 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-07-21 16:22:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:08,680 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2020-07-21 16:22:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:22:08,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-21 16:22:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:08,700 INFO L225 Difference]: With dead ends: 49 [2020-07-21 16:22:08,700 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 16:22:08,706 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 16:22:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 16:22:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-21 16:22:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 16:22:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-07-21 16:22:08,771 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 15 [2020-07-21 16:22:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:08,772 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-07-21 16:22:08,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:22:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-07-21 16:22:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 16:22:08,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:08,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:08,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:08,988 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:08,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:08,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1827708973, now seen corresponding path program 1 times [2020-07-21 16:22:08,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:08,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725298671] [2020-07-21 16:22:08,991 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 16:22:09,191 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:22:09,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:22:09,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:22:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:22:09,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:22:09,300 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:22:09,303 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:22:09,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:09,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:22:09 BoogieIcfgContainer [2020-07-21 16:22:09,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:22:09,549 INFO L168 Benchmark]: Toolchain (without parser) took 3031.78 ms. Allocated memory was 143.1 MB in the beginning and 237.0 MB in the end (delta: 93.8 MB). Free memory was 101.9 MB in the beginning and 161.6 MB in the end (delta: -59.7 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:09,550 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:22:09,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.29 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 101.5 MB in the beginning and 171.6 MB in the end (delta: -70.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:09,552 INFO L168 Benchmark]: Boogie Preprocessor took 100.07 ms. Allocated memory is still 203.9 MB. Free memory was 171.6 MB in the beginning and 168.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:09,553 INFO L168 Benchmark]: RCFGBuilder took 740.18 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 121.8 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:22:09,554 INFO L168 Benchmark]: TraceAbstraction took 1410.94 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 120.8 MB in the beginning and 161.6 MB in the end (delta: -40.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:22:09,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.29 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 101.5 MB in the beginning and 171.6 MB in the end (delta: -70.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.07 ms. Allocated memory is still 203.9 MB. Free memory was 171.6 MB in the beginning and 168.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 740.18 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 121.8 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1410.94 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 120.8 MB in the beginning and 161.6 MB in the end (delta: -40.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 998]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] COND TRUE __VERIFIER_nondet_int() [L989] head->data = 2 [L989] head->opt = malloc(sizeof(SLL)) [L989] EXPR head->opt [L989] head->opt->next = ((void*)0) [L990] SLL* x = head; VAL [head={2998:0}, malloc(sizeof(SLL))={2999:0}, malloc(sizeof(SLL))={2998:0}, x={2998:0}] [L992] COND FALSE !(__VERIFIER_nondet_int()) [L995] x = head VAL [head={2998:0}, malloc(sizeof(SLL))={2999:0}, malloc(sizeof(SLL))={2998:0}, x={2998:0}] [L996] COND TRUE x != ((void*)0) VAL [head={2998:0}, malloc(sizeof(SLL))={2999:0}, malloc(sizeof(SLL))={2998:0}, x={2998:0}] [L998] EXPR x->data [L998] EXPR x->data == 2 && x->opt == x [L998] EXPR x->opt [L998] EXPR x->data == 2 && x->opt == x VAL [head={2998:0}, malloc(sizeof(SLL))={2999:0}, malloc(sizeof(SLL))={2998:0}, x={2998:0}, x->data=2, x->data == 2 && x->opt == x=0, x->opt={2999:0}] [L998] COND TRUE !(x->data == 2 && x->opt == x) [L998] __VERIFIER_error() VAL [head={2998:0}, malloc(sizeof(SLL))={2999:0}, malloc(sizeof(SLL))={2998:0}, x={2998:0}] - 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: 0.0s, 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 86 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...