./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.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/list-properties/splice_false-unreach-call_false-valid-memcleanup.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 3c9bb1d53c2739069062f850cb8bf82140406b77 ............................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:37:47,214 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 15:37:47,217 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 15:37:47,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 15:37:47,236 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 15:37:47,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 15:37:47,239 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 15:37:47,242 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 15:37:47,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 15:37:47,248 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 15:37:47,251 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 15:37:47,252 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 15:37:47,253 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 15:37:47,256 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 15:37:47,265 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 15:37:47,266 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 15:37:47,267 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 15:37:47,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 15:37:47,274 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 15:37:47,278 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 15:37:47,281 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 15:37:47,282 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 15:37:47,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 15:37:47,290 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 15:37:47,290 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 15:37:47,291 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 15:37:47,292 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 15:37:47,296 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 15:37:47,297 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 15:37:47,300 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 15:37:47,301 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 15:37:47,302 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 15:37:47,302 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 15:37:47,303 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 15:37:47,303 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 15:37:47,306 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 15:37:47,306 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-14 15:37:47,335 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 15:37:47,336 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 15:37:47,337 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 15:37:47,338 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 15:37:47,338 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 15:37:47,338 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 15:37:47,338 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-14 15:37:47,338 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 15:37:47,339 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-14 15:37:47,340 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 15:37:47,340 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-14 15:37:47,340 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-14 15:37:47,341 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-14 15:37:47,341 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-14 15:37:47,341 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 15:37:47,342 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-14 15:37:47,342 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 15:37:47,342 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 15:37:47,342 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-14 15:37:47,343 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-14 15:37:47,343 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-14 15:37:47,343 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 15:37:47,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-14 15:37:47,343 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-14 15:37:47,343 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 15:37:47,344 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-14 15:37:47,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-14 15:37:47,346 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 -> 3c9bb1d53c2739069062f850cb8bf82140406b77 [2019-01-14 15:37:47,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 15:37:47,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 15:37:47,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 15:37:47,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 15:37:47,421 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 15:37:47,422 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:37:47,477 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5103f08f5/d6236c687d9d445898caef1a19cc6931/FLAG56d84902b [2019-01-14 15:37:47,972 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 15:37:47,973 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:37:47,990 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5103f08f5/d6236c687d9d445898caef1a19cc6931/FLAG56d84902b [2019-01-14 15:37:48,297 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5103f08f5/d6236c687d9d445898caef1a19cc6931 [2019-01-14 15:37:48,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 15:37:48,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 15:37:48,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 15:37:48,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 15:37:48,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 15:37:48,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:48,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff617d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48, skipping insertion in model container [2019-01-14 15:37:48,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:48,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 15:37:48,365 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 15:37:48,717 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:37:48,732 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 15:37:48,871 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 15:37:48,931 INFO L195 MainTranslator]: Completed translation [2019-01-14 15:37:48,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48 WrapperNode [2019-01-14 15:37:48,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 15:37:48,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 15:37:48,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 15:37:48,934 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 15:37:48,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:48,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 15:37:49,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 15:37:49,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 15:37:49,002 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 15:37:49,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (1/1) ... [2019-01-14 15:37:49,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 15:37:49,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 15:37:49,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 15:37:49,043 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 15:37:49,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (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 15:37:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-14 15:37:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-14 15:37:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-01-14 15:37:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-01-14 15:37:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-01-14 15:37:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 15:37:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 15:37:49,599 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 15:37:49,599 INFO L286 CfgBuilder]: Removed 12 assue(true) statements. [2019-01-14 15:37:49,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:37:49 BoogieIcfgContainer [2019-01-14 15:37:49,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 15:37:49,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-14 15:37:49,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-14 15:37:49,605 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-14 15:37:49,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.01 03:37:48" (1/3) ... [2019-01-14 15:37:49,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4636faac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:37:49, skipping insertion in model container [2019-01-14 15:37:49,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 03:37:48" (2/3) ... [2019-01-14 15:37:49,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4636faac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.01 03:37:49, skipping insertion in model container [2019-01-14 15:37:49,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:37:49" (3/3) ... [2019-01-14 15:37:49,609 INFO L112 eAbstractionObserver]: Analyzing ICFG splice_false-unreach-call_false-valid-memcleanup.i [2019-01-14 15:37:49,617 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-14 15:37:49,625 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-14 15:37:49,642 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-14 15:37:49,668 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 15:37:49,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-14 15:37:49,669 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-14 15:37:49,669 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-14 15:37:49,669 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 15:37:49,669 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 15:37:49,669 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-14 15:37:49,669 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 15:37:49,670 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-14 15:37:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-01-14 15:37:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-14 15:37:49,690 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:37:49,691 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:37:49,693 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:37:49,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:37:49,698 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2019-01-14 15:37:49,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:37:49,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:37:49,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:49,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:37:49,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:37:49,813 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 15:37:49,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:37:49,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-14 15:37:49,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-14 15:37:49,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-14 15:37:49,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-14 15:37:49,832 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-01-14 15:37:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:37:49,848 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2019-01-14 15:37:49,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-14 15:37:49,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-01-14 15:37:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:37:49,857 INFO L225 Difference]: With dead ends: 46 [2019-01-14 15:37:49,857 INFO L226 Difference]: Without dead ends: 23 [2019-01-14 15:37:49,861 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 [2019-01-14 15:37:49,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-01-14 15:37:49,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-01-14 15:37:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-01-14 15:37:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2019-01-14 15:37:49,896 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2019-01-14 15:37:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:37:49,896 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2019-01-14 15:37:49,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-14 15:37:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2019-01-14 15:37:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-14 15:37:49,897 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:37:49,898 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:37:49,898 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:37:49,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:37:49,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2019-01-14 15:37:49,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:37:49,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:37:49,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:49,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:37:49,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:37:50,041 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 15:37:50,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:37:50,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 15:37:50,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 15:37:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 15:37:50,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 15:37:50,046 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2019-01-14 15:37:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:37:50,305 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-01-14 15:37:50,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 15:37:50,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-01-14 15:37:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:37:50,307 INFO L225 Difference]: With dead ends: 40 [2019-01-14 15:37:50,307 INFO L226 Difference]: Without dead ends: 33 [2019-01-14 15:37:50,308 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 15:37:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-01-14 15:37:50,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2019-01-14 15:37:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-01-14 15:37:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-01-14 15:37:50,315 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2019-01-14 15:37:50,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:37:50,315 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-01-14 15:37:50,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 15:37:50,316 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-01-14 15:37:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-01-14 15:37:50,316 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:37:50,317 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:37:50,317 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:37:50,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:37:50,317 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2019-01-14 15:37:50,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:37:50,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:37:50,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:50,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:37:50,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:37:50,469 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 15:37:50,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:37:50,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-14 15:37:50,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-14 15:37:50,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-14 15:37:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-01-14 15:37:50,470 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2019-01-14 15:37:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:37:50,565 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2019-01-14 15:37:50,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-14 15:37:50,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-01-14 15:37:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:37:50,570 INFO L225 Difference]: With dead ends: 47 [2019-01-14 15:37:50,570 INFO L226 Difference]: Without dead ends: 39 [2019-01-14 15:37:50,571 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-01-14 15:37:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-01-14 15:37:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2019-01-14 15:37:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-01-14 15:37:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-01-14 15:37:50,587 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2019-01-14 15:37:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:37:50,587 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-01-14 15:37:50,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-14 15:37:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2019-01-14 15:37:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-01-14 15:37:50,589 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:37:50,589 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:37:50,591 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:37:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:37:50,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2019-01-14 15:37:50,592 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:37:50,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:37:50,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:50,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:37:50,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-14 15:37:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-14 15:37:50,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-14 15:37:50,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-14 15:37:50,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-14 15:37:50,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-14 15:37:50,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-14 15:37:50,763 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 6 states. [2019-01-14 15:37:50,962 WARN L181 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2019-01-14 15:37:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-14 15:37:51,141 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2019-01-14 15:37:51,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-14 15:37:51,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-01-14 15:37:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-14 15:37:51,144 INFO L225 Difference]: With dead ends: 70 [2019-01-14 15:37:51,144 INFO L226 Difference]: Without dead ends: 43 [2019-01-14 15:37:51,144 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-01-14 15:37:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-01-14 15:37:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-01-14 15:37:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-01-14 15:37:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2019-01-14 15:37:51,152 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2019-01-14 15:37:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-14 15:37:51,152 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2019-01-14 15:37:51,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-14 15:37:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2019-01-14 15:37:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-01-14 15:37:51,154 INFO L394 BasicCegarLoop]: Found error trace [2019-01-14 15:37:51,154 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-14 15:37:51,154 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-14 15:37:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 15:37:51,155 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2019-01-14 15:37:51,155 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 15:37:51,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 15:37:51,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:51,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 15:37:51,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 15:37:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:37:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 15:37:51,273 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-14 15:37:51,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.01 03:37:51 BoogieIcfgContainer [2019-01-14 15:37:51,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-14 15:37:51,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 15:37:51,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 15:37:51,316 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 15:37:51,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 03:37:49" (3/4) ... [2019-01-14 15:37:51,319 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-14 15:37:51,384 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 15:37:51,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 15:37:51,385 INFO L168 Benchmark]: Toolchain (without parser) took 3083.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -75.5 MB). Peak memory consumption was 78.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:37:51,386 INFO L168 Benchmark]: CDTParser took 0.15 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 15:37:51,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. [2019-01-14 15:37:51,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.28 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 15:37:51,388 INFO L168 Benchmark]: Boogie Preprocessor took 40.78 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 15:37:51,388 INFO L168 Benchmark]: RCFGBuilder took 558.16 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:37:51,389 INFO L168 Benchmark]: TraceAbstraction took 1713.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 11.5 GB. [2019-01-14 15:37:51,390 INFO L168 Benchmark]: Witness Printer took 68.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-01-14 15:37:51,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 630.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -181.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.28 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. * Boogie Preprocessor took 40.78 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. * RCFGBuilder took 558.16 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1713.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.1 MB). Peak memory consumption was 74.1 MB. Max. memory is 11.5 GB. * Witness Printer took 68.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = 1; [L628] List a = (List) malloc(sizeof(struct node)); [L629] COND FALSE !(a == 0) [L630] List t; [L631] List l1; [L632] List l2; [L633] List b; [L634] List u; [L635] List p = a; [L636] COND TRUE __VERIFIER_nondet_int() [L637] COND TRUE \read(flag) [L638] p->h = 1 [L639] flag = 0 [L644] t = (List) malloc(sizeof(struct node)) [L645] COND FALSE !(t == 0) [L646] p->n = t [L647] EXPR p->n [L647] p = p->n [L636] COND FALSE !(__VERIFIER_nondet_int()) [L649] p->h = 3 [L650] EXPR a->h [L650] COND FALSE !(a->h == 3) [L651] flag = 1 [L652] l1 = 0 [L653] l2 = 0 [L654] p = a [L655] EXPR p->h [L655] COND TRUE p->h != 3 [L656] t = p [L657] EXPR p->n [L657] p = p->n [L658] COND TRUE \read(flag) [L659] t->n = l1 [L660] l1 = t [L661] flag = 0 [L655] EXPR p->h [L655] COND FALSE !(p->h != 3) [L668] p = l1 [L669] COND TRUE p != 0 [L670] EXPR p->h [L670] COND TRUE p->h != 2 [L679] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. UNSAFE Result, 1.6s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 113 SDtfs, 26 SDslu, 130 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...