/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/recursive_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 05:11:51,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 05:11:51,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 05:11:51,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 05:11:51,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 05:11:51,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 05:11:51,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 05:11:51,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 05:11:51,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 05:11:51,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 05:11:51,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 05:11:51,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 05:11:51,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 05:11:51,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 05:11:51,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 05:11:51,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 05:11:51,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 05:11:51,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 05:11:51,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 05:11:51,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 05:11:51,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 05:11:51,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 05:11:51,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 05:11:51,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 05:11:51,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-18 05:11:51,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-18 05:11:51,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-18 05:11:51,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-18 05:11:51,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-18 05:11:51,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-18 05:11:51,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 05:11:51,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 05:11:51,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 05:11:51,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 05:11:51,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 05:11:51,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 05:11:51,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 05:11:51,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 05:11:51,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 05:11:51,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 05:11:51,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 05:11:51,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 05:11:51,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 05:11:51,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 05:11:51,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 05:11:51,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 05:11:51,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 05:11:51,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 05:11:51,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 05:11:51,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 05:11:51,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 05:11:51,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 05:11:51,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 05:11:51,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 05:11:51,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 05:11:51,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 05:11:51,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 05:11:51,371 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 05:11:51,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 05:11:51,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 05:11:51,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 05:11:51,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 05:11:51,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 05:11:51,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 05:11:51,373 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 05:11:51,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 05:11:51,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 05:11:51,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 05:11:51,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 05:11:51,700 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 05:11:51,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/recursive_list.i [2020-07-18 05:11:51,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f86a3249/74d3ac4269ee49708f5636828b378300/FLAGc3b6cfbb0 [2020-07-18 05:11:52,271 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 05:11:52,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i [2020-07-18 05:11:52,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f86a3249/74d3ac4269ee49708f5636828b378300/FLAGc3b6cfbb0 [2020-07-18 05:11:52,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f86a3249/74d3ac4269ee49708f5636828b378300 [2020-07-18 05:11:52,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 05:11:52,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 05:11:52,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 05:11:52,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 05:11:52,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 05:11:52,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:52,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1359070d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52, skipping insertion in model container [2020-07-18 05:11:52,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:52,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 05:11:52,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 05:11:52,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:11:52,908 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 05:11:52,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 05:11:52,951 INFO L208 MainTranslator]: Completed translation [2020-07-18 05:11:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52 WrapperNode [2020-07-18 05:11:52,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 05:11:52,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 05:11:52,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 05:11:52,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 05:11:53,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (1/1) ... [2020-07-18 05:11:53,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 05:11:53,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 05:11:53,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 05:11:53,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 05:11:53,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (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 [2020-07-18 05:11:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 05:11:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 05:11:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-18 05:11:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_memory [2020-07-18 05:11:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-07-18 05:11:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 05:11:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 05:11:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 05:11:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-18 05:11:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_memory [2020-07-18 05:11:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 05:11:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-07-18 05:11:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 05:11:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-18 05:11:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 05:11:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 05:11:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-18 05:11:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 05:11:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 05:11:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 05:11:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 05:11:53,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 05:11:53,624 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 05:11:53,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:11:53 BoogieIcfgContainer [2020-07-18 05:11:53,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 05:11:53,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 05:11:53,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 05:11:53,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 05:11:53,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 05:11:52" (1/3) ... [2020-07-18 05:11:53,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b6773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:11:53, skipping insertion in model container [2020-07-18 05:11:53,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 05:11:52" (2/3) ... [2020-07-18 05:11:53,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b6773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 05:11:53, skipping insertion in model container [2020-07-18 05:11:53,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 05:11:53" (3/3) ... [2020-07-18 05:11:53,642 INFO L109 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2020-07-18 05:11:53,658 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 05:11:53,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 05:11:53,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 05:11:53,725 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 05:11:53,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 05:11:53,726 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 05:11:53,726 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 05:11:53,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 05:11:53,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 05:11:53,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 05:11:53,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 05:11:53,752 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-18 05:11:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-18 05:11:53,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 05:11:53,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 05:11:53,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 05:11:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 05:11:53,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2037520420, now seen corresponding path program 1 times [2020-07-18 05:11:53,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 05:11:53,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951919383] [2020-07-18 05:11:53,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 05:11:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:11:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 05:11:54,190 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 05:11:54,192 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 05:11:54,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 05:11:54,259 WARN L170 areAnnotationChecker]: allocate_memoryENTRY has no Hoare annotation [2020-07-18 05:11:54,260 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 05:11:54,260 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-18 05:11:54,261 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-18 05:11:54,261 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:11:54,261 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 05:11:54,261 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 05:11:54,261 WARN L170 areAnnotationChecker]: appendENTRY has no Hoare annotation [2020-07-18 05:11:54,262 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-18 05:11:54,262 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:11:54,262 WARN L170 areAnnotationChecker]: errFINAL has no Hoare annotation [2020-07-18 05:11:54,262 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:11:54,262 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 05:11:54,263 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-18 05:11:54,263 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 05:11:54,263 WARN L170 areAnnotationChecker]: allocate_memoryFINAL has no Hoare annotation [2020-07-18 05:11:54,263 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 05:11:54,263 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-18 05:11:54,264 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 05:11:54,264 WARN L170 areAnnotationChecker]: L37-1 has no Hoare annotation [2020-07-18 05:11:54,264 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-18 05:11:54,264 WARN L170 areAnnotationChecker]: allocate_memoryEXIT has no Hoare annotation [2020-07-18 05:11:54,265 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-18 05:11:54,265 WARN L170 areAnnotationChecker]: L48-12 has no Hoare annotation [2020-07-18 05:11:54,265 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-18 05:11:54,265 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 05:11:54,265 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 05:11:54,265 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-18 05:11:54,266 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 05:11:54,266 WARN L170 areAnnotationChecker]: L37-2 has no Hoare annotation [2020-07-18 05:11:54,266 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-18 05:11:54,266 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-18 05:11:54,267 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 05:11:54,267 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 05:11:54,267 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-18 05:11:54,267 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-18 05:11:54,267 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-18 05:11:54,268 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 05:11:54,268 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-18 05:11:54,268 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-18 05:11:54,268 WARN L170 areAnnotationChecker]: L42-1 has no Hoare annotation [2020-07-18 05:11:54,268 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-18 05:11:54,269 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-18 05:11:54,269 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-18 05:11:54,269 WARN L170 areAnnotationChecker]: appendFINAL has no Hoare annotation [2020-07-18 05:11:54,269 WARN L170 areAnnotationChecker]: L43-1 has no Hoare annotation [2020-07-18 05:11:54,269 WARN L170 areAnnotationChecker]: appendEXIT has no Hoare annotation [2020-07-18 05:11:54,270 WARN L170 areAnnotationChecker]: appendEXIT has no Hoare annotation [2020-07-18 05:11:54,270 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2020-07-18 05:11:54,270 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-18 05:11:54,270 WARN L170 areAnnotationChecker]: L48-1 has no Hoare annotation [2020-07-18 05:11:54,270 WARN L170 areAnnotationChecker]: L48-2 has no Hoare annotation [2020-07-18 05:11:54,271 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-18 05:11:54,271 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-18 05:11:54,271 WARN L170 areAnnotationChecker]: L48-4 has no Hoare annotation [2020-07-18 05:11:54,271 WARN L170 areAnnotationChecker]: L48-9 has no Hoare annotation [2020-07-18 05:11:54,271 WARN L170 areAnnotationChecker]: L48-5 has no Hoare annotation [2020-07-18 05:11:54,272 WARN L170 areAnnotationChecker]: L48-10 has no Hoare annotation [2020-07-18 05:11:54,272 WARN L170 areAnnotationChecker]: L48-6 has no Hoare annotation [2020-07-18 05:11:54,272 WARN L170 areAnnotationChecker]: L48-11 has no Hoare annotation [2020-07-18 05:11:54,272 WARN L170 areAnnotationChecker]: L48-7 has no Hoare annotation [2020-07-18 05:11:54,272 WARN L170 areAnnotationChecker]: L48-7 has no Hoare annotation [2020-07-18 05:11:54,273 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 05:11:54,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 05:11:54 BoogieIcfgContainer [2020-07-18 05:11:54,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 05:11:54,284 INFO L168 Benchmark]: Toolchain (without parser) took 1632.92 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 102.9 MB in the beginning and 125.8 MB in the end (delta: -22.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:54,286 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 05:11:54,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.43 ms. Allocated memory is still 137.4 MB. Free memory was 102.4 MB in the beginning and 91.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:54,288 INFO L168 Benchmark]: Boogie Preprocessor took 132.84 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 179.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:54,289 INFO L168 Benchmark]: RCFGBuilder took 543.68 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 152.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:54,290 INFO L168 Benchmark]: TraceAbstraction took 649.05 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 125.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-07-18 05:11:54,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.43 ms. Allocated memory is still 137.4 MB. Free memory was 102.4 MB in the beginning and 91.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.84 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 91.8 MB in the beginning and 179.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.68 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 152.0 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 649.05 ms. Allocated memory is still 201.9 MB. Free memory was 152.0 MB in the beginning and 125.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i = 1; VAL [\old(i)=17, i=1] [L37] struct list *l,m; VAL [i=1, m={3:0}] [L38] l = &m VAL [i=1, l={3:0}, m={3:0}] [L39] l->next = 0 VAL [i=1, l={3:0}, m={3:0}] [L40] l->n = 0 VAL [i=1, l={3:0}, m={3:0}] [L42] CALL, EXPR append(l, 1) VAL [\old(n)=1, i=1, l={3:0}] [L25] struct list *new_el; VAL [\old(n)=1, i=1, l={3:0}, l={3:0}, n=1] [L27] CALL, EXPR allocate_memory() VAL [i=1] [L20] return malloc(8U); VAL [\result={-1:0}, i=1, malloc(8U)={-1:0}] [L27] RET, EXPR allocate_memory() VAL [\old(n)=1, allocate_memory()={-1:0}, i=1, l={3:0}, l={3:0}, n=1] [L27] new_el = allocate_memory() VAL [\old(n)=1, allocate_memory()={-1:0}, i=1, l={3:0}, l={3:0}, n=1, new_el={-1:0}] [L29] new_el->n = n VAL [\old(n)=1, i=1, l={3:0}, l={3:0}, n=1, new_el={-1:0}] [L30] new_el->next = l VAL [\old(n)=1, i=1, l={3:0}, l={3:0}, n=1, new_el={-1:0}] [L32] return new_el; VAL [\old(n)=1, \result={-1:0}, i=1, l={3:0}, l={3:0}, n=1, new_el={-1:0}] [L42] RET, EXPR append(l, 1) VAL [append(l, 1)={-1:0}, i=1, l={3:0}, m={3:0}] [L42] l = append(l, 1) VAL [append(l, 1)={-1:0}, i=1, l={-1:0}, m={3:0}] [L43] CALL, EXPR append(l, 2) VAL [\old(n)=2, i=1, l={-1:0}] [L25] struct list *new_el; VAL [\old(n)=2, i=1, l={-1:0}, l={-1:0}, n=2] [L27] CALL, EXPR allocate_memory() VAL [i=1] [L20] return malloc(8U); VAL [\result={-2:0}, i=1, malloc(8U)={-2:0}] [L27] RET, EXPR allocate_memory() VAL [\old(n)=2, allocate_memory()={-2:0}, i=1, l={-1:0}, l={-1:0}, n=2] [L27] new_el = allocate_memory() VAL [\old(n)=2, allocate_memory()={-2:0}, i=1, l={-1:0}, l={-1:0}, n=2, new_el={-2:0}] [L29] new_el->n = n VAL [\old(n)=2, i=1, l={-1:0}, l={-1:0}, n=2, new_el={-2:0}] [L30] new_el->next = l VAL [\old(n)=2, i=1, l={-1:0}, l={-1:0}, n=2, new_el={-2:0}] [L32] return new_el; VAL [\old(n)=2, \result={-2:0}, i=1, l={-1:0}, l={-1:0}, n=2, new_el={-2:0}] [L43] RET, EXPR append(l, 2) VAL [append(l, 2)={-2:0}, i=1, l={-1:0}, m={3:0}] [L43] l = append(l, 2) VAL [append(l, 2)={-2:0}, i=1, l={-2:0}, m={3:0}] [L48] EXPR l->next VAL [i=1, l={-2:0}, l->next={-1:0}, m={3:0}] [L48] EXPR l->next->next VAL [i=1, l={-2:0}, l->next={-1:0}, l->next->next={3:0}, m={3:0}] [L48] EXPR l->next->next->n VAL [i=1, l={-2:0}, l->next={-1:0}, l->next->next={3:0}, l->next->next->n=0, m={3:0}] [L48] COND TRUE l->next->next->n == 0 VAL [i=1, l={-2:0}, l->next={-1:0}, l->next->next={3:0}, l->next->next->n=0, m={3:0}] [L48] CALL err() VAL [i=1] [L8] __VERIFIER_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...