./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9b6c190b845f4496788acb9553cb85e1e7dace14 ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 10:04:41,551 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 10:04:41,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 10:04:41,565 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 10:04:41,565 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 10:04:41,566 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 10:04:41,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 10:04:41,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 10:04:41,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 10:04:41,575 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 10:04:41,578 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 10:04:41,579 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 10:04:41,580 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 10:04:41,581 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 10:04:41,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 10:04:41,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 10:04:41,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 10:04:41,589 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 10:04:41,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 10:04:41,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 10:04:41,599 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 10:04:41,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 10:04:41,605 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 10:04:41,605 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 10:04:41,605 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 10:04:41,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 10:04:41,609 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 10:04:41,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 10:04:41,612 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 10:04:41,614 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 10:04:41,615 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 10:04:41,616 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 10:04:41,617 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 10:04:41,617 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 10:04:41,618 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 10:04:41,619 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 10:04:41,619 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 10:04:41,635 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 10:04:41,636 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 10:04:41,637 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 10:04:41,637 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 10:04:41,638 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 10:04:41,638 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 10:04:41,638 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 10:04:41,638 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 10:04:41,638 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 10:04:41,639 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 10:04:41,639 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 10:04:41,639 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 10:04:41,639 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 10:04:41,639 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 10:04:41,639 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 10:04:41,641 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 10:04:41,641 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 10:04:41,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 10:04:41,642 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 10:04:41,642 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 10:04:41,642 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 10:04:41,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:04:41,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 10:04:41,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 10:04:41,644 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 10:04:41,644 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 10:04:41,644 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 10:04:41,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 10:04:41,645 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b6c190b845f4496788acb9553cb85e1e7dace14 [2018-12-31 10:04:41,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 10:04:41,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 10:04:41,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 10:04:41,715 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 10:04:41,716 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 10:04:41,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c [2018-12-31 10:04:41,777 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6a65373/ca16018d3f174bec9749d3119fb25af3/FLAG44e3cc829 [2018-12-31 10:04:42,264 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 10:04:42,265 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_o3_false-unreach-call_true-termination_true-no-overflow.c [2018-12-31 10:04:42,272 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6a65373/ca16018d3f174bec9749d3119fb25af3/FLAG44e3cc829 [2018-12-31 10:04:42,588 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6a65373/ca16018d3f174bec9749d3119fb25af3 [2018-12-31 10:04:42,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 10:04:42,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 10:04:42,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 10:04:42,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 10:04:42,607 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 10:04:42,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56effeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42, skipping insertion in model container [2018-12-31 10:04:42,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 10:04:42,639 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 10:04:42,820 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:04:42,825 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 10:04:42,843 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:04:42,861 INFO L195 MainTranslator]: Completed translation [2018-12-31 10:04:42,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42 WrapperNode [2018-12-31 10:04:42,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 10:04:42,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 10:04:42,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 10:04:42,863 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 10:04:42,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 10:04:42,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 10:04:42,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 10:04:42,903 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 10:04:42,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... [2018-12-31 10:04:42,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 10:04:42,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 10:04:42,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 10:04:42,919 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 10:04:42,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:04:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 10:04:43,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 10:04:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-31 10:04:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-31 10:04:43,232 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 10:04:43,232 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 10:04:43,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:04:43 BoogieIcfgContainer [2018-12-31 10:04:43,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 10:04:43,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 10:04:43,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 10:04:43,238 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 10:04:43,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 10:04:42" (1/3) ... [2018-12-31 10:04:43,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5058213f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:04:43, skipping insertion in model container [2018-12-31 10:04:43,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:04:42" (2/3) ... [2018-12-31 10:04:43,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5058213f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:04:43, skipping insertion in model container [2018-12-31 10:04:43,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:04:43" (3/3) ... [2018-12-31 10:04:43,241 INFO L112 eAbstractionObserver]: Analyzing ICFG id_o3_false-unreach-call_true-termination_true-no-overflow.c [2018-12-31 10:04:43,251 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 10:04:43,257 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 10:04:43,275 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 10:04:43,307 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 10:04:43,308 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 10:04:43,308 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 10:04:43,308 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 10:04:43,309 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 10:04:43,309 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 10:04:43,309 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 10:04:43,309 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 10:04:43,309 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 10:04:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-12-31 10:04:43,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 10:04:43,336 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:04:43,337 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:04:43,339 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:04:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:04:43,346 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2018-12-31 10:04:43,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:04:43,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:04:43,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:43,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:04:43,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:04:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 10:04:43,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 10:04:43,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 10:04:43,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 10:04:43,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 10:04:43,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 10:04:43,814 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2018-12-31 10:04:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:04:43,894 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-12-31 10:04:43,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 10:04:43,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-12-31 10:04:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:04:43,909 INFO L225 Difference]: With dead ends: 27 [2018-12-31 10:04:43,910 INFO L226 Difference]: Without dead ends: 14 [2018-12-31 10:04:43,914 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 10:04:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-31 10:04:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-31 10:04:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-31 10:04:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-12-31 10:04:43,963 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2018-12-31 10:04:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:04:43,963 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-12-31 10:04:43,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 10:04:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-12-31 10:04:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-31 10:04:43,966 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:04:43,966 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:04:43,967 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:04:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:04:43,967 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2018-12-31 10:04:43,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:04:43,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:04:43,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:43,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:04:43,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:04:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-31 10:04:44,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:04:44,319 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:04:44,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:04:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:04:44,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:04:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-31 10:04:44,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:04:44,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-31 10:04:44,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 10:04:44,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 10:04:44,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-31 10:04:44,661 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 8 states. [2018-12-31 10:04:44,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:04:44,717 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-12-31 10:04:44,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 10:04:44,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-12-31 10:04:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:04:44,720 INFO L225 Difference]: With dead ends: 21 [2018-12-31 10:04:44,720 INFO L226 Difference]: Without dead ends: 17 [2018-12-31 10:04:44,721 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-31 10:04:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-31 10:04:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-31 10:04:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-31 10:04:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-12-31 10:04:44,727 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2018-12-31 10:04:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:04:44,727 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-12-31 10:04:44,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 10:04:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-12-31 10:04:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-31 10:04:44,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:04:44,729 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:04:44,729 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:04:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:04:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1824240471, now seen corresponding path program 2 times [2018-12-31 10:04:44,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:04:44,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:04:44,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:44,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:04:44,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:04:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-31 10:04:45,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:04:45,123 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:04:45,133 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 10:04:45,148 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 10:04:45,149 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:04:45,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:04:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-31 10:04:45,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:04:45,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-12-31 10:04:45,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 10:04:45,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 10:04:45,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:04:45,276 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 10 states. [2018-12-31 10:04:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:04:45,363 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-31 10:04:45,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 10:04:45,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-12-31 10:04:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:04:45,367 INFO L225 Difference]: With dead ends: 24 [2018-12-31 10:04:45,367 INFO L226 Difference]: Without dead ends: 20 [2018-12-31 10:04:45,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:04:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-31 10:04:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-31 10:04:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-31 10:04:45,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-31 10:04:45,374 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2018-12-31 10:04:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:04:45,374 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-31 10:04:45,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 10:04:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-31 10:04:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-31 10:04:45,376 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:04:45,376 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:04:45,376 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:04:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:04:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash -28473709, now seen corresponding path program 3 times [2018-12-31 10:04:45,377 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:04:45,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:04:45,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:45,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:04:45,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:04:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 10:04:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 10:04:45,463 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 10:04:45,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 10:04:45 BoogieIcfgContainer [2018-12-31 10:04:45,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 10:04:45,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 10:04:45,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 10:04:45,492 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 10:04:45,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:04:43" (3/4) ... [2018-12-31 10:04:45,496 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 10:04:45,545 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 10:04:45,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 10:04:45,546 INFO L168 Benchmark]: Toolchain (without parser) took 2951.87 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -51.1 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2018-12-31 10:04:45,548 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:04:45,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 10:04:45,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.77 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:04:45,550 INFO L168 Benchmark]: Boogie Preprocessor took 15.88 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:04:45,551 INFO L168 Benchmark]: RCFGBuilder took 314.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-31 10:04:45,551 INFO L168 Benchmark]: TraceAbstraction took 2257.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.0 MB). Peak memory consumption was 93.0 MB. Max. memory is 11.5 GB. [2018-12-31 10:04:45,552 INFO L168 Benchmark]: Witness Printer took 53.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:04:45,556 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 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.93 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.77 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.88 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 314.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2257.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 93.0 MB). Peak memory consumption was 93.0 MB. Max. memory is 11.5 GB. * Witness Printer took 53.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int input = __VERIFIER_nondet_uint(); [L11] CALL, EXPR id(input) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 3 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. UNSAFE Result, 2.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 3 SDslu, 207 SDs, 0 SdLazy, 69 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 5160 SizeOfPredicates, 2 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 18/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...