/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 0.1.25-8fc6572 [2020-07-11 01:04:42,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 01:04:42,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 01:04:42,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 01:04:42,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 01:04:42,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 01:04:42,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 01:04:42,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 01:04:42,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 01:04:42,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 01:04:42,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 01:04:42,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 01:04:42,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 01:04:42,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 01:04:42,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 01:04:42,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 01:04:42,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 01:04:42,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 01:04:42,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 01:04:42,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 01:04:42,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 01:04:42,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 01:04:42,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 01:04:42,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 01:04:42,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-11 01:04:42,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-11 01:04:42,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-11 01:04:42,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-11 01:04:42,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-11 01:04:42,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-11 01:04:42,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 01:04:42,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 01:04:42,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 01:04:42,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 01:04:42,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 01:04:42,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 01:04:42,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 01:04:42,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 01:04:42,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 01:04:42,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 01:04:42,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 01:04:42,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 01:04:42,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 01:04:42,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 01:04:42,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 01:04:42,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 01:04:42,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 01:04:42,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 01:04:42,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 01:04:42,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 01:04:42,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 01:04:42,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 01:04:42,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 01:04:42,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 01:04:42,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 01:04:42,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 01:04:42,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 01:04:42,422 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 01:04:42,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 01:04:42,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 01:04:42,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 01:04:42,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 01:04:42,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 01:04:42,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 01:04:42,423 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 [2020-07-11 01:04:42,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 01:04:42,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 01:04:42,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 01:04:42,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 01:04:42,750 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 01:04:42,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/recursive_list.i [2020-07-11 01:04:42,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b9d7fb4/4261cb5f81cc4e349aeb1b990c84cd7f/FLAG4bd896002 [2020-07-11 01:04:43,281 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 01:04:43,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i [2020-07-11 01:04:43,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b9d7fb4/4261cb5f81cc4e349aeb1b990c84cd7f/FLAG4bd896002 [2020-07-11 01:04:43,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7b9d7fb4/4261cb5f81cc4e349aeb1b990c84cd7f [2020-07-11 01:04:43,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 01:04:43,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 01:04:43,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 01:04:43,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 01:04:43,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 01:04:43,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:04:43" (1/1) ... [2020-07-11 01:04:43,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7467a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:43, skipping insertion in model container [2020-07-11 01:04:43,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:04:43" (1/1) ... [2020-07-11 01:04:43,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 01:04:43,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 01:04:43,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:04:44,012 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 01:04:44,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:04:44,066 INFO L208 MainTranslator]: Completed translation [2020-07-11 01:04:44,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44 WrapperNode [2020-07-11 01:04:44,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 01:04:44,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 01:04:44,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 01:04:44,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 01:04:44,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (1/1) ... [2020-07-11 01:04:44,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 01:04:44,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 01:04:44,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 01:04:44,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 01:04:44,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (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 [2020-07-11 01:04:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 01:04:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 01:04:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-11 01:04:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_memory [2020-07-11 01:04:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-07-11 01:04:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 01:04:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_memory [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 01:04:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-11 01:04:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-11 01:04:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-11 01:04:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-11 01:04:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 01:04:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 01:04:44,795 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 01:04:44,795 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-11 01:04:44,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:04:44 BoogieIcfgContainer [2020-07-11 01:04:44,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 01:04:44,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 01:04:44,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 01:04:44,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 01:04:44,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 01:04:43" (1/3) ... [2020-07-11 01:04:44,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ce3fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:04:44, skipping insertion in model container [2020-07-11 01:04:44,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:04:44" (2/3) ... [2020-07-11 01:04:44,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ce3fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:04:44, skipping insertion in model container [2020-07-11 01:04:44,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:04:44" (3/3) ... [2020-07-11 01:04:44,809 INFO L109 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2020-07-11 01:04:44,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 01:04:44,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 01:04:44,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 01:04:44,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 01:04:44,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 01:04:44,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 01:04:44,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 01:04:44,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 01:04:44,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 01:04:44,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 01:04:44,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 01:04:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-11 01:04:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-11 01:04:44,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:04:44,896 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] [2020-07-11 01:04:44,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:04:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:04:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2037520420, now seen corresponding path program 1 times [2020-07-11 01:04:44,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:04:44,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751613239] [2020-07-11 01:04:44,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:04:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:04:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:04:45,278 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-11 01:04:45,279 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 01:04:45,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 01:04:45,340 WARN L170 areAnnotationChecker]: allocate_memoryENTRY has no Hoare annotation [2020-07-11 01:04:45,341 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-11 01:04:45,341 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-11 01:04:45,341 WARN L170 areAnnotationChecker]: errENTRY has no Hoare annotation [2020-07-11 01:04:45,341 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:04:45,341 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:04:45,342 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 01:04:45,342 WARN L170 areAnnotationChecker]: appendENTRY has no Hoare annotation [2020-07-11 01:04:45,342 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-11 01:04:45,342 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:04:45,342 WARN L170 areAnnotationChecker]: errFINAL has no Hoare annotation [2020-07-11 01:04:45,343 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:04:45,343 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:04:45,343 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-11 01:04:45,343 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-11 01:04:45,343 WARN L170 areAnnotationChecker]: allocate_memoryFINAL has no Hoare annotation [2020-07-11 01:04:45,343 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-11 01:04:45,344 WARN L170 areAnnotationChecker]: errEXIT has no Hoare annotation [2020-07-11 01:04:45,344 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 01:04:45,344 WARN L170 areAnnotationChecker]: L37-1 has no Hoare annotation [2020-07-11 01:04:45,344 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-11 01:04:45,344 WARN L170 areAnnotationChecker]: allocate_memoryEXIT has no Hoare annotation [2020-07-11 01:04:45,345 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-11 01:04:45,345 WARN L170 areAnnotationChecker]: L48-12 has no Hoare annotation [2020-07-11 01:04:45,345 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-11 01:04:45,345 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-11 01:04:45,345 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-11 01:04:45,345 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2020-07-11 01:04:45,346 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 01:04:45,346 WARN L170 areAnnotationChecker]: L37-2 has no Hoare annotation [2020-07-11 01:04:45,346 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-11 01:04:45,348 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-11 01:04:45,348 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 01:04:45,348 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 01:04:45,349 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-11 01:04:45,349 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-11 01:04:45,349 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-11 01:04:45,349 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 01:04:45,349 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-11 01:04:45,350 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-11 01:04:45,350 WARN L170 areAnnotationChecker]: L42-1 has no Hoare annotation [2020-07-11 01:04:45,350 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-11 01:04:45,350 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-11 01:04:45,350 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-11 01:04:45,350 WARN L170 areAnnotationChecker]: appendFINAL has no Hoare annotation [2020-07-11 01:04:45,351 WARN L170 areAnnotationChecker]: L43-1 has no Hoare annotation [2020-07-11 01:04:45,351 WARN L170 areAnnotationChecker]: appendEXIT has no Hoare annotation [2020-07-11 01:04:45,351 WARN L170 areAnnotationChecker]: appendEXIT has no Hoare annotation [2020-07-11 01:04:45,351 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2020-07-11 01:04:45,351 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-11 01:04:45,352 WARN L170 areAnnotationChecker]: L48-1 has no Hoare annotation [2020-07-11 01:04:45,352 WARN L170 areAnnotationChecker]: L48-2 has no Hoare annotation [2020-07-11 01:04:45,352 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-11 01:04:45,352 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-11 01:04:45,352 WARN L170 areAnnotationChecker]: L48-4 has no Hoare annotation [2020-07-11 01:04:45,352 WARN L170 areAnnotationChecker]: L48-9 has no Hoare annotation [2020-07-11 01:04:45,353 WARN L170 areAnnotationChecker]: L48-5 has no Hoare annotation [2020-07-11 01:04:45,353 WARN L170 areAnnotationChecker]: L48-10 has no Hoare annotation [2020-07-11 01:04:45,353 WARN L170 areAnnotationChecker]: L48-6 has no Hoare annotation [2020-07-11 01:04:45,353 WARN L170 areAnnotationChecker]: L48-11 has no Hoare annotation [2020-07-11 01:04:45,353 WARN L170 areAnnotationChecker]: L48-7 has no Hoare annotation [2020-07-11 01:04:45,353 WARN L170 areAnnotationChecker]: L48-7 has no Hoare annotation [2020-07-11 01:04:45,354 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. [2020-07-11 01:04:45,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 01:04:45 BoogieIcfgContainer [2020-07-11 01:04:45,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 01:04:45,368 INFO L168 Benchmark]: Toolchain (without parser) took 1695.68 ms. Allocated memory was 137.9 MB in the beginning and 205.5 MB in the end (delta: 67.6 MB). Free memory was 101.4 MB in the beginning and 129.6 MB in the end (delta: -28.2 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:45,370 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-11 01:04:45,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.96 ms. Allocated memory is still 137.9 MB. Free memory was 101.0 MB in the beginning and 90.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:45,374 INFO L168 Benchmark]: Boogie Preprocessor took 215.55 ms. Allocated memory was 137.9 MB in the beginning and 205.5 MB in the end (delta: 67.6 MB). Free memory was 90.3 MB in the beginning and 182.7 MB in the end (delta: -92.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:45,377 INFO L168 Benchmark]: RCFGBuilder took 516.29 ms. Allocated memory is still 205.5 MB. Free memory was 182.7 MB in the beginning and 156.1 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:45,379 INFO L168 Benchmark]: TraceAbstraction took 561.61 ms. Allocated memory is still 205.5 MB. Free memory was 155.5 MB in the beginning and 129.6 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-11 01:04:45,390 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 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.96 ms. Allocated memory is still 137.9 MB. Free memory was 101.0 MB in the beginning and 90.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.55 ms. Allocated memory was 137.9 MB in the beginning and 205.5 MB in the end (delta: 67.6 MB). Free memory was 90.3 MB in the beginning and 182.7 MB in the end (delta: -92.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 516.29 ms. Allocated memory is still 205.5 MB. Free memory was 182.7 MB in the beginning and 156.1 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 561.61 ms. Allocated memory is still 205.5 MB. Free memory was 155.5 MB in the beginning and 129.6 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 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...