./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test19_true-unreach-call_true-termination.c --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/ldv-regression/test19_true-unreach-call_true-termination.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 0c0446e0ab344184143837ac7165b5e517628f70 .............................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-14 15:50:18,213 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:50:18,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:50:18,227 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:50:18,227 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:50:18,229 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:50:18,230 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:50:18,232 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:50:18,234 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:50:18,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:50:18,236 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:50:18,237 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:50:18,237 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:50:18,239 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:50:18,240 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:50:18,241 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:50:18,242 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:50:18,244 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:50:18,247 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:50:18,249 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:50:18,250 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:50:18,252 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:50:18,255 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:50:18,255 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:50:18,255 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:50:18,260 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:50:18,261 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:50:18,264 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:50:18,265 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:50:18,268 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:50:18,268 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:50:18,271 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:50:18,271 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:50:18,271 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:50:18,272 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:50:18,273 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:50:18,273 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:50:18,307 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:50:18,307 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:50:18,312 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:50:18,312 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:50:18,312 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:50:18,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:50:18,313 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:50:18,314 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:50:18,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:50:18,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:50:18,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:50:18,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:50:18,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:50:18,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:50:18,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:50:18,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:50:18,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:50:18,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:50:18,318 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:50:18,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:50:18,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:50:18,318 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 -> 0c0446e0ab344184143837ac7165b5e517628f70 [2019-01-14 15:50:18,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:50:18,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:50:18,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:50:18,416 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:50:18,416 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:50:18,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test19_true-unreach-call_true-termination.c [2019-01-14 15:50:18,481 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91212610/1d30c44fd79745119ed60f947197308c/FLAG76ad1bddb [2019-01-14 15:50:18,941 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:50:18,942 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test19_true-unreach-call_true-termination.c [2019-01-14 15:50:18,947 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91212610/1d30c44fd79745119ed60f947197308c/FLAG76ad1bddb [2019-01-14 15:50:19,299 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91212610/1d30c44fd79745119ed60f947197308c [2019-01-14 15:50:19,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:50:19,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:50:19,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:50:19,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:50:19,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:50:19,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d04184c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19, skipping insertion in model container [2019-01-14 15:50:19,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:50:19,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:50:19,499 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:50:19,521 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:50:19,539 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:50:19,558 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:50:19,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19 WrapperNode [2019-01-14 15:50:19,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:50:19,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:50:19,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:50:19,561 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:50:19,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:50:19,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:50:19,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:50:19,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:50:19,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (1/1) ... [2019-01-14 15:50:19,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:50:19,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:50:19,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:50:19,643 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:50:19,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (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 15:50:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 15:50:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-01-14 15:50:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-01-14 15:50:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-14 15:50:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:50:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:50:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:50:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:50:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-14 15:50:20,002 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:50:20,003 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-14 15:50:20,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:50:20 BoogieIcfgContainer [2019-01-14 15:50:20,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:50:20,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:50:20,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:50:20,009 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:50:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:50:19" (1/3) ... [2019-01-14 15:50:20,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dde385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:50:20, skipping insertion in model container [2019-01-14 15:50:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:50:19" (2/3) ... [2019-01-14 15:50:20,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77dde385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:50:20, skipping insertion in model container [2019-01-14 15:50:20,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:50:20" (3/3) ... [2019-01-14 15:50:20,013 INFO L112 eAbstractionObserver]: Analyzing ICFG test19_true-unreach-call_true-termination.c [2019-01-14 15:50:20,021 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:50:20,028 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:50:20,043 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:50:20,076 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:50:20,077 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:50:20,077 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:50:20,077 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:50:20,077 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:50:20,078 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:50:20,078 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:50:20,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:50:20,079 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:50:20,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-01-14 15:50:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-14 15:50:20,100 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:50:20,101 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-14 15:50:20,104 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:50:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:50:20,111 INFO L82 PathProgramCache]: Analyzing trace with hash 28692805, now seen corresponding path program 1 times [2019-01-14 15:50:20,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:50:20,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:50:20,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:50:20,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:50:20,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:50:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:50:20,503 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 15:50:20,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:50:20,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 15:50:20,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 15:50:20,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 15:50:20,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 15:50:20,523 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2019-01-14 15:50:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:50:20,603 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-01-14 15:50:20,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-14 15:50:20,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-01-14 15:50:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:50:20,611 INFO L225 Difference]: With dead ends: 12 [2019-01-14 15:50:20,611 INFO L226 Difference]: Without dead ends: 0 [2019-01-14 15:50:20,614 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 15:50:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-14 15:50:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-14 15:50:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-14 15:50:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-14 15:50:20,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-01-14 15:50:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:50:20,640 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-14 15:50:20,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 15:50:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-14 15:50:20,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-14 15:50:20,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-14 15:50:20,700 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-14 15:50:20,701 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-14 15:50:20,701 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-14 15:50:20,701 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-14 15:50:20,701 INFO L451 ceAbstractionStarter]: At program point L23(lines 11 24) the Hoare annotation is: true [2019-01-14 15:50:20,701 INFO L444 ceAbstractionStarter]: At program point L17(lines 11 24) the Hoare annotation is: false [2019-01-14 15:50:20,702 INFO L448 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2019-01-14 15:50:20,702 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2019-01-14 15:50:20,702 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 9) no Hoare annotation was computed. [2019-01-14 15:50:20,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:50:20 BoogieIcfgContainer [2019-01-14 15:50:20,709 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:50:20,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:50:20,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:50:20,711 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:50:20,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:50:20" (3/4) ... [2019-01-14 15:50:20,715 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-14 15:50:20,731 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-01-14 15:50:20,732 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-01-14 15:50:20,733 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-14 15:50:20,827 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:50:20,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:50:20,828 INFO L168 Benchmark]: Toolchain (without parser) took 1525.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -129.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:20,830 INFO L168 Benchmark]: CDTParser took 0.19 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 15:50:20,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.85 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. [2019-01-14 15:50:20,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.90 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. [2019-01-14 15:50:20,832 INFO L168 Benchmark]: Boogie Preprocessor took 31.47 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:20,832 INFO L168 Benchmark]: RCFGBuilder took 361.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:20,835 INFO L168 Benchmark]: TraceAbstraction took 704.56 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:20,836 INFO L168 Benchmark]: Witness Printer took 117.26 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-01-14 15:50:20,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 254.85 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 49.90 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 31.47 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 361.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 704.56 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: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 117.26 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 1 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...