/usr/bin/java -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.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 --traceabstraction.use.minimal.unsat.core.enumeration 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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 03:41:41,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 03:41:41,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 03:41:41,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 03:41:41,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 03:41:41,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 03:41:41,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 03:41:41,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 03:41:41,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 03:41:41,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 03:41:41,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 03:41:41,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 03:41:41,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 03:41:41,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 03:41:41,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 03:41:41,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 03:41:41,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 03:41:41,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 03:41:41,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 03:41:41,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 03:41:41,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 03:41:41,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 03:41:41,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 03:41:41,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 03:41:41,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 03:41:41,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 03:41:41,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 03:41:41,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 03:41:41,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 03:41:41,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 03:41:41,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 03:41:41,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 03:41:41,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 03:41:41,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 03:41:41,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 03:41:41,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 03:41:41,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 03:41:41,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 03:41:41,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 03:41:41,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 03:41:41,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 03:41:41,828 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 [2020-08-28 03:41:41,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 03:41:41,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 03:41:41,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 03:41:41,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 03:41:41,859 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 03:41:41,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 03:41:41,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 03:41:41,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 03:41:41,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 03:41:41,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 03:41:41,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 03:41:41,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 03:41:41,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 03:41:41,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 03:41:41,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 03:41:41,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 03:41:41,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 03:41:41,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 03:41:41,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 03:41:41,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 03:41:41,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 03:41:41,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 03:41:41,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 03:41:41,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 03:41:41,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 03:41:41,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 03:41:41,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 03:41:41,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 03:41:41,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 03:41:41,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-28 03:41:42,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 03:41:42,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 03:41:42,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 03:41:42,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 03:41:42,547 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 03:41:42,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c [2020-08-28 03:41:42,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961f1291a/dcb5536d6ec8451b9f32fa7af70bb3d7/FLAG5cded23cb [2020-08-28 03:41:43,178 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 03:41:43,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/afterrec-1.c [2020-08-28 03:41:43,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961f1291a/dcb5536d6ec8451b9f32fa7af70bb3d7/FLAG5cded23cb [2020-08-28 03:41:43,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/961f1291a/dcb5536d6ec8451b9f32fa7af70bb3d7 [2020-08-28 03:41:43,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 03:41:43,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 03:41:43,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 03:41:43,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 03:41:43,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 03:41:43,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0b79a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43, skipping insertion in model container [2020-08-28 03:41:43,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 03:41:43,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 03:41:43,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 03:41:43,799 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 03:41:43,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 03:41:43,830 INFO L208 MainTranslator]: Completed translation [2020-08-28 03:41:43,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43 WrapperNode [2020-08-28 03:41:43,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 03:41:43,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 03:41:43,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 03:41:43,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 03:41:43,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (1/1) ... [2020-08-28 03:41:43,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 03:41:43,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 03:41:43,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 03:41:43,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 03:41:43,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (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 [2020-08-28 03:41:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 03:41:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 03:41:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-28 03:41:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 03:41:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 03:41:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-28 03:41:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 03:41:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 03:41:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 03:41:44,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 03:41:44,218 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 03:41:44,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 03:41:44 BoogieIcfgContainer [2020-08-28 03:41:44,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 03:41:44,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 03:41:44,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 03:41:44,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 03:41:44,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 03:41:43" (1/3) ... [2020-08-28 03:41:44,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d17597f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 03:41:44, skipping insertion in model container [2020-08-28 03:41:44,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:41:43" (2/3) ... [2020-08-28 03:41:44,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d17597f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 03:41:44, skipping insertion in model container [2020-08-28 03:41:44,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 03:41:44" (3/3) ... [2020-08-28 03:41:44,232 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec-1.c [2020-08-28 03:41:44,242 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 03:41:44,252 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 03:41:44,272 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 03:41:44,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 03:41:44,302 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 03:41:44,302 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 03:41:44,302 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 03:41:44,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 03:41:44,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 03:41:44,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 03:41:44,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 03:41:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-08-28 03:41:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-28 03:41:44,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 03:41:44,330 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 03:41:44,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 03:41:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 03:41:44,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2020-08-28 03:41:44,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 03:41:44,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618773159] [2020-08-28 03:41:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 03:41:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 03:41:44,477 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 03:41:44,479 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 03:41:44,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 03:41:44,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 03:41:44 BoogieIcfgContainer [2020-08-28 03:41:44,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 03:41:44,509 INFO L168 Benchmark]: Toolchain (without parser) took 955.95 ms. Allocated memory was 113.2 MB in the beginning and 167.8 MB in the end (delta: 54.5 MB). Free memory was 78.4 MB in the beginning and 133.2 MB in the end (delta: -54.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-28 03:41:44,510 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 113.2 MB. Free memory was 96.0 MB in the beginning and 95.9 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-08-28 03:41:44,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.54 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 69.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2020-08-28 03:41:44,513 INFO L168 Benchmark]: Boogie Preprocessor took 51.69 ms. Allocated memory was 113.2 MB in the beginning and 123.2 MB in the end (delta: 10.0 MB). Free memory was 69.3 MB in the beginning and 99.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-28 03:41:44,514 INFO L168 Benchmark]: RCFGBuilder took 338.62 ms. Allocated memory was 123.2 MB in the beginning and 167.8 MB in the end (delta: 44.6 MB). Free memory was 99.8 MB in the beginning and 144.8 MB in the end (delta: -45.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. [2020-08-28 03:41:44,515 INFO L168 Benchmark]: TraceAbstraction took 281.54 ms. Allocated memory is still 167.8 MB. Free memory was 143.9 MB in the beginning and 133.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-28 03:41:44,520 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 113.2 MB. Free memory was 96.0 MB in the beginning and 95.9 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.54 ms. Allocated memory is still 113.2 MB. Free memory was 78.1 MB in the beginning and 69.3 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.69 ms. Allocated memory was 113.2 MB in the beginning and 123.2 MB in the end (delta: 10.0 MB). Free memory was 69.3 MB in the beginning and 99.8 MB in the end (delta: -30.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.62 ms. Allocated memory was 123.2 MB in the beginning and 167.8 MB in the end (delta: 44.6 MB). Free memory was 99.8 MB in the beginning and 144.8 MB in the end (delta: -45.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 281.54 ms. Allocated memory is still 167.8 MB. Free memory was 143.9 MB in the beginning and 133.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] CALL f(4) [L4] COND FALSE !(n<3) [L5] n-- [L6] CALL f(n) [L4] COND FALSE !(n<3) [L5] n-- [L6] CALL f(n) [L4] COND TRUE n<3 [L6] RET f(n) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 3, 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=16occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 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...