./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/sum_array_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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/loops/sum_array_false-unreach-call.i -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 d03898b2adab3b021eca92ab7fbddac81b7b0464 .................................................................................................................................................................................................................................................................................. 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 0.1.24-0ed9222-m [2019-01-14 17:03:44,594 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 17:03:44,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 17:03:44,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 17:03:44,607 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 17:03:44,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 17:03:44,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 17:03:44,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 17:03:44,613 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 17:03:44,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 17:03:44,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 17:03:44,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 17:03:44,615 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 17:03:44,616 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 17:03:44,617 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 17:03:44,618 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 17:03:44,619 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 17:03:44,621 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 17:03:44,623 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 17:03:44,624 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 17:03:44,625 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 17:03:44,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 17:03:44,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 17:03:44,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 17:03:44,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 17:03:44,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 17:03:44,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 17:03:44,636 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 17:03:44,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 17:03:44,638 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 17:03:44,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 17:03:44,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 17:03:44,639 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 17:03:44,639 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 17:03:44,643 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 17:03:44,644 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 17:03:44,644 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 17:03:44,658 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 17:03:44,658 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 17:03:44,660 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 17:03:44,660 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 17:03:44,660 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 17:03:44,660 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 17:03:44,660 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 17:03:44,661 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 17:03:44,662 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 17:03:44,662 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 17:03:44,662 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 17:03:44,662 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 17:03:44,662 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 17:03:44,662 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 17:03:44,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 17:03:44,663 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 17:03:44,663 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 17:03:44,663 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 17:03:44,663 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 17:03:44,663 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 17:03:44,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 17:03:44,664 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 -> d03898b2adab3b021eca92ab7fbddac81b7b0464 [2019-01-14 17:03:44,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 17:03:44,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 17:03:44,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 17:03:44,718 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 17:03:44,718 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 17:03:44,719 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/sum_array_false-unreach-call.i [2019-01-14 17:03:44,780 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb3e47b6/8f44ab9f82604a4ab6d85266d7df606d/FLAG6bd4b2751 [2019-01-14 17:03:45,225 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 17:03:45,226 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/sum_array_false-unreach-call.i [2019-01-14 17:03:45,236 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb3e47b6/8f44ab9f82604a4ab6d85266d7df606d/FLAG6bd4b2751 [2019-01-14 17:03:45,612 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb3e47b6/8f44ab9f82604a4ab6d85266d7df606d [2019-01-14 17:03:45,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 17:03:45,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 17:03:45,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 17:03:45,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 17:03:45,622 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 17:03:45,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fc82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45, skipping insertion in model container [2019-01-14 17:03:45,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 17:03:45,648 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 17:03:45,799 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:03:45,803 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 17:03:45,839 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 17:03:45,877 INFO L195 MainTranslator]: Completed translation [2019-01-14 17:03:45,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45 WrapperNode [2019-01-14 17:03:45,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 17:03:45,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 17:03:45,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 17:03:45,880 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 17:03:45,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 17:03:45,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 17:03:45,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 17:03:45,956 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 17:03:45,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:45,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:46,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (1/1) ... [2019-01-14 17:03:46,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 17:03:46,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 17:03:46,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 17:03:46,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 17:03:46,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (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 [2019-01-14 17:03:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 17:03:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 17:03:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 17:03:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 17:03:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 17:03:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 17:03:46,593 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 17:03:46,597 INFO L286 CfgBuilder]: Removed 10 assue(true) statements. [2019-01-14 17:03:46,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:03:46 BoogieIcfgContainer [2019-01-14 17:03:46,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 17:03:46,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 17:03:46,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 17:03:46,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 17:03:46,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 05:03:45" (1/3) ... [2019-01-14 17:03:46,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171fd504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:03:46, skipping insertion in model container [2019-01-14 17:03:46,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 05:03:45" (2/3) ... [2019-01-14 17:03:46,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171fd504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 05:03:46, skipping insertion in model container [2019-01-14 17:03:46,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:03:46" (3/3) ... [2019-01-14 17:03:46,607 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_false-unreach-call.i [2019-01-14 17:03:46,617 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 17:03:46,629 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 17:03:46,648 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 17:03:46,679 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 17:03:46,679 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 17:03:46,679 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 17:03:46,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 17:03:46,680 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 17:03:46,680 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 17:03:46,680 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 17:03:46,680 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 17:03:46,680 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 17:03:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-14 17:03:46,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-14 17:03:46,697 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:03:46,698 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:03:46,700 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:03:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:03:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash -779788197, now seen corresponding path program 1 times [2019-01-14 17:03:46,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:03:46,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:03:46,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:03:46,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:03:46,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:03:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 17:03:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 17:03:46,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 17:03:46,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 17:03:46,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 17:03:46,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 17:03:46,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 17:03:46,989 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2019-01-14 17:03:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 17:03:47,319 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2019-01-14 17:03:47,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 17:03:47,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-14 17:03:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 17:03:47,331 INFO L225 Difference]: With dead ends: 60 [2019-01-14 17:03:47,331 INFO L226 Difference]: Without dead ends: 29 [2019-01-14 17:03:47,335 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 17:03:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-01-14 17:03:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2019-01-14 17:03:47,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-01-14 17:03:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-01-14 17:03:47,368 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2019-01-14 17:03:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 17:03:47,369 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-01-14 17:03:47,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 17:03:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-01-14 17:03:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 17:03:47,370 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 17:03:47,370 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 17:03:47,370 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 17:03:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 17:03:47,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1602849365, now seen corresponding path program 1 times [2019-01-14 17:03:47,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 17:03:47,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 17:03:47,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:03:47,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 17:03:47,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 17:03:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 17:03:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 17:03:47,647 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 17:03:47,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 05:03:47 BoogieIcfgContainer [2019-01-14 17:03:47,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 17:03:47,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 17:03:47,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 17:03:47,689 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 17:03:47,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 05:03:46" (3/4) ... [2019-01-14 17:03:47,692 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 17:03:47,769 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 17:03:47,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 17:03:47,770 INFO L168 Benchmark]: Toolchain (without parser) took 2153.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -143.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-01-14 17:03:47,772 INFO L168 Benchmark]: CDTParser took 0.14 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. [2019-01-14 17:03:47,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.49 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 17:03:47,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.63 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:03:47,774 INFO L168 Benchmark]: Boogie Preprocessor took 51.11 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-14 17:03:47,778 INFO L168 Benchmark]: RCFGBuilder took 590.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -206.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2019-01-14 17:03:47,779 INFO L168 Benchmark]: TraceAbstraction took 1088.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. [2019-01-14 17:03:47,782 INFO L168 Benchmark]: Witness Printer took 81.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 17:03:47,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 260.49 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 76.63 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.11 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 590.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -206.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1088.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 11.5 GB. * Witness Printer took 81.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i