/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:19:16,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:19:16,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:19:16,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:19:16,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:19:16,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:19:16,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:19:16,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:19:16,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:19:16,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:19:16,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:19:16,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:19:16,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:19:16,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:19:16,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:19:16,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:19:16,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:19:16,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:19:16,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:19:16,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:19:16,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:19:16,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:19:16,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:19:16,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:19:16,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:19:16,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:19:16,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:19:16,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:19:16,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:19:16,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:19:16,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:19:16,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:19:16,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:19:16,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:19:16,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:19:16,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:19:16,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:19:16,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:19:16,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:19:16,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:19:16,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:19:16,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:19:16,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:19:16,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:19:16,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:19:16,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:19:16,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:19:16,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:19:16,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:19:16,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:19:16,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:19:16,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:19:16,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:19:16,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:19:16,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:19:16,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:19:16,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:19:16,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:19:16,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:19:16,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:19:16,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:19:16,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:19:16,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:19:16,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:19:16,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:19:16,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:19:16,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:19:16,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:19:16,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:19:16,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:19:16,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:19:16,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:19:17,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:19:17,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:19:17,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:19:17,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:19:17,339 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:19:17,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-10-28 15:19:17,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbca6342c/434aa8165fc242848422cb99b04ce901/FLAGa40b1ad60 [2020-10-28 15:19:18,132 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:19:18,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i [2020-10-28 15:19:18,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbca6342c/434aa8165fc242848422cb99b04ce901/FLAGa40b1ad60 [2020-10-28 15:19:18,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbca6342c/434aa8165fc242848422cb99b04ce901 [2020-10-28 15:19:18,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:19:18,466 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:19:18,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:19:18,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:19:18,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:19:18,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbd1d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18, skipping insertion in model container [2020-10-28 15:19:18,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:19:18,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:19:18,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:19:18,705 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:19:18,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:19:18,747 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:19:18,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18 WrapperNode [2020-10-28 15:19:18,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:19:18,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:19:18,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:19:18,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:19:18,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... [2020-10-28 15:19:18,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:19:18,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:19:18,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:19:18,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:19:18,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 15:19:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:19:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:19:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:19:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:19:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-10-28 15:19:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:19:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:19:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:19:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:19:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:19:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:19:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:19:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:19:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-10-28 15:19:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:19:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:19:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:19:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:19:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:19:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:19:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:19:19,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:19:19,305 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:19:19,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:19:19 BoogieIcfgContainer [2020-10-28 15:19:19,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:19:19,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:19:19,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:19:19,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:19:19,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:19:18" (1/3) ... [2020-10-28 15:19:19,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0900e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:19:19, skipping insertion in model container [2020-10-28 15:19:19,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:19:18" (2/3) ... [2020-10-28 15:19:19,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e0900e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:19:19, skipping insertion in model container [2020-10-28 15:19:19,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:19:19" (3/3) ... [2020-10-28 15:19:19,344 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i [2020-10-28 15:19:19,361 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:19:19,366 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:19:19,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:19:19,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:19:19,417 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:19:19,417 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:19:19,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:19:19,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:19:19,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:19:19,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:19:19,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:19:19,438 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 15:19:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:19:19,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:19,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:19,446 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:19,453 INFO L82 PathProgramCache]: Analyzing trace with hash -146724392, now seen corresponding path program 1 times [2020-10-28 15:19:19,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:19,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245728174] [2020-10-28 15:19:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:20,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 15:19:20,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-28 15:19:20,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:20,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:19:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:19:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 15:19:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:19:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:20,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:20,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:20,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:20,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:19:20,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:20,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:20,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:20,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245728174] [2020-10-28 15:19:20,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:19:20,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:19:20,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095131416] [2020-10-28 15:19:20,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:19:20,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:20,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:19:20,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:19:20,526 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 8 states. [2020-10-28 15:19:20,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:20,964 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-10-28 15:19:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:19:20,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-28 15:19:20,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:20,975 INFO L225 Difference]: With dead ends: 62 [2020-10-28 15:19:20,975 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 15:19:20,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:19:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 15:19:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-28 15:19:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 15:19:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-28 15:19:21,030 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 15 [2020-10-28 15:19:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:21,031 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-28 15:19:21,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:19:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-28 15:19:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 15:19:21,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:21,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:21,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:19:21,033 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:21,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:21,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1818918482, now seen corresponding path program 1 times [2020-10-28 15:19:21,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:21,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88138407] [2020-10-28 15:19:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:21,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:21,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:19:21,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 15:19:21,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:21,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:21,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:19:21,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:19:21,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 15:19:21,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:21,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:21,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:21,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:21,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:19:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:21,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:19:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:19:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:21,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:19:21,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88138407] [2020-10-28 15:19:21,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:21,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:19:21,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694000355] [2020-10-28 15:19:21,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:19:21,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:19:21,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:19:21,467 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-10-28 15:19:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:21,897 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-28 15:19:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:19:21,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-28 15:19:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:21,900 INFO L225 Difference]: With dead ends: 40 [2020-10-28 15:19:21,900 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 15:19:21,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:19:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 15:19:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-28 15:19:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 15:19:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-10-28 15:19:21,912 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 23 [2020-10-28 15:19:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:21,913 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-10-28 15:19:21,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:19:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-10-28 15:19:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 15:19:21,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:21,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:21,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:19:21,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash -824728700, now seen corresponding path program 2 times [2020-10-28 15:19:21,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:21,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182566162] [2020-10-28 15:19:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 15:19:21,939 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 15:19:21,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 15:19:21,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:19:21,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:19:21 BoogieIcfgContainer [2020-10-28 15:19:21,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:19:21,964 INFO L168 Benchmark]: Toolchain (without parser) took 3505.62 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.8 MB in the beginning and 132.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:21,965 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:19:21,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:21,967 INFO L168 Benchmark]: Boogie Preprocessor took 45.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:21,968 INFO L168 Benchmark]: RCFGBuilder took 532.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 134.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:21,969 INFO L168 Benchmark]: TraceAbstraction took 2629.64 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.3 MB in the beginning and 132.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-10-28 15:19:21,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 100.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 532.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 134.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2629.64 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.3 MB in the beginning and 132.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] Char *tmp; [L40] Char pathbuf[1 +1]; [L42] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L44] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 [L46] CALL glob2 (pathbuf, bound) [L27] Char *p; [L29] p = pathbuf [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND FALSE !(!(cond)) [L31] RET __VERIFIER_assert(p<=tmp) [L32] *p = 1 [L29] p++ [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND FALSE !(!(cond)) [L31] RET __VERIFIER_assert(p<=tmp) [L32] *p = 1 [L29] p++ [L29] COND TRUE p <= pathlim [L31] CALL __VERIFIER_assert(p<=tmp) [L15] COND TRUE !(cond) [L16] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "verisec_NetBSD-libc_loop.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 76 SDslu, 75 SDs, 0 SdLazy, 207 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 3744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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...