/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:51:08,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:51:08,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:51:08,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:51:08,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:51:08,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:51:08,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:51:08,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:51:08,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:51:08,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:51:08,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:51:08,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:51:08,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:51:08,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:51:08,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:51:08,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:51:08,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:51:08,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:51:08,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:51:08,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:51:08,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:51:08,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:51:08,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:51:08,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:51:08,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:51:08,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:51:08,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:51:08,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:51:08,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:51:08,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:51:08,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:51:08,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:51:08,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:51:08,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:51:08,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:51:08,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:51:08,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:51:08,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:51:08,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:51:08,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:51:08,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:51:08,612 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 [2020-08-18 17:51:08,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:51:08,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:51:08,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:51:08,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:51:08,656 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:51:08,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:51:08,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:51:08,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:51:08,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:51:08,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:51:08,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:51:08,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:51:08,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:51:08,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:51:08,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:51:08,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:51:08,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:51:08,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:51:08,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:51:08,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:51:08,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:51:08,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:51:08,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:51:08,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:51:08,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:51:08,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:51:08,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:51:08,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:51:08,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:51:08,662 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=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:51:08,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:51:08,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:51:08,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:51:08,967 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:51:08,968 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:51:08,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-1.c [2020-08-18 17:51:09,037 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e3b6d8b/f58fb434b8464263824e974aada226d1/FLAG784b6dee6 [2020-08-18 17:51:09,482 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:51:09,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/afterrec-1.c [2020-08-18 17:51:09,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e3b6d8b/f58fb434b8464263824e974aada226d1/FLAG784b6dee6 [2020-08-18 17:51:09,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e3b6d8b/f58fb434b8464263824e974aada226d1 [2020-08-18 17:51:09,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:51:09,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:51:09,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:51:09,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:51:09,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:51:09,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:51:09" (1/1) ... [2020-08-18 17:51:09,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485dcc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:09, skipping insertion in model container [2020-08-18 17:51:09,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:51:09" (1/1) ... [2020-08-18 17:51:09,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:51:09,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:51:10,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:51:10,102 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:51:10,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:51:10,127 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:51:10,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10 WrapperNode [2020-08-18 17:51:10,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:51:10,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:51:10,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:51:10,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:51:10,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (1/1) ... [2020-08-18 17:51:10,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:51:10,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:51:10,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:51:10,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:51:10,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (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 [2020-08-18 17:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-18 17:51:10,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-18 17:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:51:10,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:51:10,442 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:51:10,442 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 17:51:10,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:51:10 BoogieIcfgContainer [2020-08-18 17:51:10,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:51:10,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:51:10,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:51:10,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:51:10,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:51:09" (1/3) ... [2020-08-18 17:51:10,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0025fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:51:10, skipping insertion in model container [2020-08-18 17:51:10,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:51:10" (2/3) ... [2020-08-18 17:51:10,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0025fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:51:10, skipping insertion in model container [2020-08-18 17:51:10,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:51:10" (3/3) ... [2020-08-18 17:51:10,455 INFO L109 eAbstractionObserver]: Analyzing ICFG afterrec-1.c [2020-08-18 17:51:10,466 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:51:10,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:51:10,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:51:10,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:51:10,511 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:51:10,511 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:51:10,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:51:10,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:51:10,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:51:10,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:51:10,512 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:51:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-08-18 17:51:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 17:51:10,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:51:10,532 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:51:10,533 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:51:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:51:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1715138264, now seen corresponding path program 1 times [2020-08-18 17:51:10,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:51:10,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544214504] [2020-08-18 17:51:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:51:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:51:10,629 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:51:10,629 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:51:10,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:51:10,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:51:10 BoogieIcfgContainer [2020-08-18 17:51:10,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:51:10,648 INFO L168 Benchmark]: Toolchain (without parser) took 782.49 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 158.9 MB in the end (delta: -56.8 MB). Peak memory consumption was 6.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:51:10,650 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 17:51:10,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.73 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 92.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:51:10,652 INFO L168 Benchmark]: Boogie Preprocessor took 104.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 181.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:51:10,654 INFO L168 Benchmark]: RCFGBuilder took 212.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 170.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-18 17:51:10,655 INFO L168 Benchmark]: TraceAbstraction took 197.86 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 158.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:51:10,660 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.73 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 92.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 181.5 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 212.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 170.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197.86 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 158.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 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...