./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loops/while_infinite_loop_3_true-unreach-call_false-termination.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/while_infinite_loop_3_true-unreach-call_false-termination.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 bf39cb82696559ce2a61c1f997102826529c1f07 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 10:52:39,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 10:52:39,604 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 10:52:39,615 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 10:52:39,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 10:52:39,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 10:52:39,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 10:52:39,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 10:52:39,622 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 10:52:39,623 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 10:52:39,624 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 10:52:39,624 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 10:52:39,625 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 10:52:39,626 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 10:52:39,628 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 10:52:39,628 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 10:52:39,630 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 10:52:39,632 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 10:52:39,634 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 10:52:39,636 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 10:52:39,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 10:52:39,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 10:52:39,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 10:52:39,641 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 10:52:39,641 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 10:52:39,642 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 10:52:39,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 10:52:39,645 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 10:52:39,645 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 10:52:39,647 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 10:52:39,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 10:52:39,648 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 10:52:39,648 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 10:52:39,648 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 10:52:39,650 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 10:52:39,650 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 10:52:39,651 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 10:52:39,670 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 10:52:39,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 10:52:39,672 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 10:52:39,672 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 10:52:39,672 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 10:52:39,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 10:52:39,673 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 10:52:39,673 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 10:52:39,673 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 10:52:39,673 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 10:52:39,674 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 10:52:39,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 10:52:39,674 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 10:52:39,674 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 10:52:39,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 10:52:39,674 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 10:52:39,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 10:52:39,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 10:52:39,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 10:52:39,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 10:52:39,675 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 10:52:39,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 10:52:39,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 10:52:39,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 10:52:39,676 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 10:52:39,676 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 10:52:39,676 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 10:52:39,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 10:52:39,677 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 -> bf39cb82696559ce2a61c1f997102826529c1f07 [2019-01-12 10:52:39,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 10:52:39,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 10:52:39,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 10:52:39,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 10:52:39,750 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 10:52:39,751 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2019-01-12 10:52:39,808 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868fa03e6/24d2790c6c944931adcc5c05f5a9d37f/FLAG3283dacb2 [2019-01-12 10:52:40,221 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 10:52:40,222 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2019-01-12 10:52:40,228 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868fa03e6/24d2790c6c944931adcc5c05f5a9d37f/FLAG3283dacb2 [2019-01-12 10:52:40,640 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868fa03e6/24d2790c6c944931adcc5c05f5a9d37f [2019-01-12 10:52:40,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 10:52:40,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 10:52:40,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 10:52:40,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 10:52:40,650 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 10:52:40,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41bed4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40, skipping insertion in model container [2019-01-12 10:52:40,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 10:52:40,678 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 10:52:40,832 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:52:40,840 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 10:52:40,857 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 10:52:40,879 INFO L195 MainTranslator]: Completed translation [2019-01-12 10:52:40,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40 WrapperNode [2019-01-12 10:52:40,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 10:52:40,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 10:52:40,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 10:52:40,883 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 10:52:40,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 10:52:40,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 10:52:40,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 10:52:40,931 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 10:52:40,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (1/1) ... [2019-01-12 10:52:40,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 10:52:40,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 10:52:40,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 10:52:40,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 10:52:40,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (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 [2019-01-12 10:52:41,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 10:52:41,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 10:52:41,352 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 10:52:41,352 INFO L286 CfgBuilder]: Removed 12 assue(true) statements. [2019-01-12 10:52:41,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:41 BoogieIcfgContainer [2019-01-12 10:52:41,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 10:52:41,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 10:52:41,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 10:52:41,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 10:52:41,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 10:52:40" (1/3) ... [2019-01-12 10:52:41,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49105dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:52:41, skipping insertion in model container [2019-01-12 10:52:41,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 10:52:40" (2/3) ... [2019-01-12 10:52:41,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49105dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 10:52:41, skipping insertion in model container [2019-01-12 10:52:41,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:41" (3/3) ... [2019-01-12 10:52:41,361 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3_true-unreach-call_false-termination.i [2019-01-12 10:52:41,371 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 10:52:41,378 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-01-12 10:52:41,394 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-01-12 10:52:41,424 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 10:52:41,425 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 10:52:41,425 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 10:52:41,425 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 10:52:41,425 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 10:52:41,425 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 10:52:41,425 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 10:52:41,425 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 10:52:41,426 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 10:52:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-01-12 10:52:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-01-12 10:52:41,446 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:52:41,447 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-01-12 10:52:41,449 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:52:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:52:41,455 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2019-01-12 10:52:41,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:52:41,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:52:41,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:41,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:52:41,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:52:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 10:52:41,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:52:41,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 10:52:41,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 10:52:41,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 10:52:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 10:52:41,580 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-01-12 10:52:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:52:41,601 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2019-01-12 10:52:41,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 10:52:41,604 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-01-12 10:52:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:52:41,616 INFO L225 Difference]: With dead ends: 22 [2019-01-12 10:52:41,617 INFO L226 Difference]: Without dead ends: 8 [2019-01-12 10:52:41,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 10:52:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-01-12 10:52:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-01-12 10:52:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-12 10:52:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-12 10:52:41,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-01-12 10:52:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:52:41,663 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-12 10:52:41,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 10:52:41,663 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-12 10:52:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-12 10:52:41,664 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 10:52:41,664 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-12 10:52:41,664 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 10:52:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 10:52:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2019-01-12 10:52:41,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 10:52:41,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 10:52:41,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:41,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 10:52:41,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 10:52:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 10:52:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 10:52:41,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 10:52:41,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 10:52:41,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 10:52:41,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 10:52:41,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-12 10:52:41,843 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-01-12 10:52:41,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 10:52:41,944 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-01-12 10:52:41,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 10:52:41,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-01-12 10:52:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 10:52:41,949 INFO L225 Difference]: With dead ends: 11 [2019-01-12 10:52:41,949 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 10:52:41,950 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-12 10:52:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 10:52:41,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 10:52:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 10:52:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 10:52:41,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-01-12 10:52:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 10:52:41,951 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 10:52:41,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 10:52:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 10:52:41,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 10:52:41,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 10:52:42,014 INFO L444 ceAbstractionStarter]: At program point L32(lines 22 33) the Hoare annotation is: false [2019-01-12 10:52:42,014 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 10:52:42,015 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 10:52:42,015 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 10:52:42,015 INFO L448 ceAbstractionStarter]: For program point L24-2(lines 24 28) no Hoare annotation was computed. [2019-01-12 10:52:42,015 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-01-12 10:52:42,015 INFO L444 ceAbstractionStarter]: At program point L4-2(lines 3 28) the Hoare annotation is: (= ~x~0 0) [2019-01-12 10:52:42,015 INFO L448 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-01-12 10:52:42,016 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 10:52:42,016 INFO L444 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: false [2019-01-12 10:52:42,016 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-01-12 10:52:42,016 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-01-12 10:52:42,016 INFO L448 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-01-12 10:52:42,016 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-01-12 10:52:42,017 INFO L444 ceAbstractionStarter]: At program point L14loopEntry(lines 14 17) the Hoare annotation is: (= ~x~0 0) [2019-01-12 10:52:42,017 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 12 19) the Hoare annotation is: (= ~x~0 0) [2019-01-12 10:52:42,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 10:52:42 BoogieIcfgContainer [2019-01-12 10:52:42,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 10:52:42,029 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 10:52:42,029 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 10:52:42,029 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 10:52:42,030 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 10:52:41" (3/4) ... [2019-01-12 10:52:42,034 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 10:52:42,043 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-01-12 10:52:42,043 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-12 10:52:42,087 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 10:52:42,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 10:52:42,088 INFO L168 Benchmark]: Toolchain (without parser) took 1444.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:42,090 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:42,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.23 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:42,092 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.90 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:42,092 INFO L168 Benchmark]: Boogie Preprocessor took 40.18 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 10:52:42,093 INFO L168 Benchmark]: RCFGBuilder took 382.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:42,093 INFO L168 Benchmark]: TraceAbstraction took 673.97 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:42,094 INFO L168 Benchmark]: Witness Printer took 58.34 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-01-12 10:52:42,099 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 235.23 ms. Allocated memory is still 1.0 GB. Free memory was 944.6 MB in the beginning and 932.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.90 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.18 ms. Allocated memory is still 1.0 GB. Free memory is still 932.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 382.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 673.97 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: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.34 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 7 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 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 AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...