./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/ldv-regression/test10_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e 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/test10_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 900cf067f789b553aebf3fa7c6ef8f7bd9edc39d ............................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:08:04,197 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:08:04,199 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:08:04,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:08:04,222 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:08:04,224 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:08:04,226 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:08:04,229 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:08:04,231 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:08:04,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:08:04,238 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:08:04,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:08:04,240 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:08:04,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:08:04,249 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:08:04,249 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:08:04,250 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:08:04,255 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:08:04,260 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:08:04,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:08:04,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:08:04,267 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:08:04,270 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:08:04,273 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:08:04,273 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:08:04,275 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:08:04,276 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:08:04,279 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:08:04,280 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:08:04,281 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:08:04,281 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:08:04,284 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:08:04,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:08:04,285 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:08:04,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:08:04,288 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:08:04,289 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:08:04,317 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:08:04,318 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:08:04,319 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:08:04,320 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:08:04,320 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:08:04,321 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:08:04,322 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:08:04,322 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:08:04,322 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:08:04,322 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:08:04,322 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:08:04,323 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:08:04,323 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:08:04,323 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:08:04,323 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:08:04,323 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:08:04,323 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:08:04,326 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:08:04,326 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:08:04,327 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:08:04,327 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:08:04,327 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:08:04,327 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:08:04,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:08:04,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:08:04,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:08:04,328 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:08:04,328 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:08:04,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:08:04,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:08:04,329 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 -> 900cf067f789b553aebf3fa7c6ef8f7bd9edc39d [2018-11-28 18:08:04,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:08:04,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:08:04,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:08:04,408 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:08:04,409 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:08:04,409 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ldv-regression/test10_true-unreach-call_true-termination.c [2018-11-28 18:08:04,469 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbdc3e75a/fb0d30eb16284b60ae72f9d2de6871be/FLAGc4df2babd [2018-11-28 18:08:04,933 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:08:04,936 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ldv-regression/test10_true-unreach-call_true-termination.c [2018-11-28 18:08:04,943 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbdc3e75a/fb0d30eb16284b60ae72f9d2de6871be/FLAGc4df2babd [2018-11-28 18:08:05,274 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbdc3e75a/fb0d30eb16284b60ae72f9d2de6871be [2018-11-28 18:08:05,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:08:05,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:08:05,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:05,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:08:05,285 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:08:05,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b0d532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05, skipping insertion in model container [2018-11-28 18:08:05,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:08:05,323 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:08:05,564 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:05,586 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:08:05,615 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:08:05,639 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:08:05,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05 WrapperNode [2018-11-28 18:08:05,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:08:05,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:05,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:08:05,641 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:08:05,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:08:05,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:08:05,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:08:05,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:08:05,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... [2018-11-28 18:08:05,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:08:05,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:08:05,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:08:05,726 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:08:05,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:08:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 18:08:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-28 18:08:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-28 18:08:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-28 18:08:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:08:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:08:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-28 18:08:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 18:08:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:08:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:08:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:08:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:08:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:08:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:08:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:08:06,337 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:08:06,338 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 18:08:06,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:06 BoogieIcfgContainer [2018-11-28 18:08:06,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:08:06,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:08:06,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:08:06,342 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:08:06,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:08:05" (1/3) ... [2018-11-28 18:08:06,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d074909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:06, skipping insertion in model container [2018-11-28 18:08:06,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:08:05" (2/3) ... [2018-11-28 18:08:06,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d074909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:08:06, skipping insertion in model container [2018-11-28 18:08:06,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:06" (3/3) ... [2018-11-28 18:08:06,346 INFO L112 eAbstractionObserver]: Analyzing ICFG test10_true-unreach-call_true-termination.c [2018-11-28 18:08:06,355 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:08:06,363 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:08:06,382 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:08:06,415 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:08:06,416 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:08:06,416 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:08:06,416 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:08:06,416 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:08:06,417 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:08:06,417 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:08:06,417 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:08:06,417 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:08:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 18:08:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:08:06,443 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:06,444 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:06,446 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:06,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:06,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1020605804, now seen corresponding path program 1 times [2018-11-28 18:08:06,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:06,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:06,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:06,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:06,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:07,103 WARN L180 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2018-11-28 18:08:07,228 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-11-28 18:08:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:08:07,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:07,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:08:07,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:08:07,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:08:07,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:08:07,564 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2018-11-28 18:08:07,987 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-11-28 18:08:08,260 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-11-28 18:08:08,626 WARN L180 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-11-28 18:08:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:08,867 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-28 18:08:08,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:08:08,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-28 18:08:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:08,879 INFO L225 Difference]: With dead ends: 26 [2018-11-28 18:08:08,880 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 18:08:08,884 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-11-28 18:08:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 18:08:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 18:08:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 18:08:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-11-28 18:08:08,927 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2018-11-28 18:08:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:08,928 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-11-28 18:08:08,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:08:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-11-28 18:08:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 18:08:08,929 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:08:08,929 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:08:08,929 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:08:08,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:08:08,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1020603882, now seen corresponding path program 1 times [2018-11-28 18:08:08,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:08:08,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:08:08,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:08,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:08:08,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:08:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:08:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:08:09,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:08:09,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:08:09,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:08:09,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:08:09,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:08:09,211 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 8 states. [2018-11-28 18:08:09,588 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2018-11-28 18:08:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:08:09,681 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-11-28 18:08:09,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:08:09,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-11-28 18:08:09,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:08:09,683 INFO L225 Difference]: With dead ends: 15 [2018-11-28 18:08:09,683 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:08:09,684 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:08:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:08:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:08:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:08:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:08:09,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-28 18:08:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:08:09,686 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:08:09,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:08:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:08:09,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:08:09,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:08:09,912 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2018-11-28 18:08:10,060 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-11-28 18:08:10,151 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:08:10,152 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~pp2~0.base |old(~pp2~0.base)|) (= ~pp2~0.offset |old(~pp2~0.offset)|)) [2018-11-28 18:08:10,152 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:08:10,152 INFO L448 ceAbstractionStarter]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2018-11-28 18:08:10,153 INFO L444 ceAbstractionStarter]: At program point fENTRY(lines 9 14) the Hoare annotation is: (or (not (= ~pp1~0.base |~#p1~0.base|)) (not (= (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.base|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (and (= (select |old(#memory_$Pointer$.base)| ~pp2~0.base) (select |#memory_$Pointer$.base| ~pp2~0.base)) (= ~pp2~0.offset |old(~pp2~0.offset)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= (select |old(#memory_$Pointer$.offset)| ~pp2~0.base) (select |#memory_$Pointer$.offset| ~pp2~0.base))) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= ~pp1~0.offset |~#p1~0.offset|)) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (= ~pp1~0.base |~#b~0.base|)) [2018-11-28 18:08:10,153 INFO L448 ceAbstractionStarter]: For program point fFINAL(lines 9 14) no Hoare annotation was computed. [2018-11-28 18:08:10,153 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:08:10,153 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (not (= |~#p2~0.base| |~#a~0.base|)) (not (= |~#b~0.base| |~#p2~0.base|)) (= ~pp1~0.base ~pp2~0.base) (not (= |~#a~0.base| |~#b~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|)) (= ~pp2~0.offset ~pp1~0.offset)) [2018-11-28 18:08:10,153 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:08:10,153 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:08:10,155 INFO L444 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#p1~0.base| |~#b~0.base|) (and (= |~#b~0.offset| (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset)) (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset)) (= |~#p1~0.base| ~pp1~0.base) (= |~#p1~0.offset| ~pp1~0.offset))) [2018-11-28 18:08:10,155 INFO L448 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2018-11-28 18:08:10,155 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#p1~0.base| |~#b~0.base|) (and (= ~pp2~0.base |old(~pp2~0.base)|) (= (select |old(#memory_$Pointer$.base)| ~pp2~0.base) (select |#memory_$Pointer$.base| ~pp2~0.base)) (= (select |old(#memory_$Pointer$.offset)| ~pp2~0.base) (select |#memory_$Pointer$.offset| ~pp2~0.base)) (= ~pp2~0.offset |old(~pp2~0.offset)|) (= ~pp1~0.base ~pp2~0.base) (= ~pp2~0.offset ~pp1~0.offset))) [2018-11-28 18:08:10,155 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2018-11-28 18:08:10,155 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2018-11-28 18:08:10,157 INFO L444 ceAbstractionStarter]: At program point L42(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#p1~0.base| |~#b~0.base|)) [2018-11-28 18:08:10,157 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2018-11-28 18:08:10,157 INFO L448 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-28 18:08:10,157 INFO L448 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2018-11-28 18:08:10,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:08:10 BoogieIcfgContainer [2018-11-28 18:08:10,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:08:10,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:08:10,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:08:10,175 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:08:10,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:08:06" (3/4) ... [2018-11-28 18:08:10,180 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:08:10,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:08:10,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-28 18:08:10,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:08:10,193 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-28 18:08:10,193 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 18:08:10,194 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:08:10,221 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((a == b || p2 == b) || !(\old(pp2) == \old(pp1))) || a == p1) || p2 == a) || !(\old(pp1) == \old(pp2))) || p1 == b [2018-11-28 18:08:10,254 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:08:10,255 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:08:10,256 INFO L168 Benchmark]: Toolchain (without parser) took 4977.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 947.3 MB in the beginning and 891.8 MB in the end (delta: 55.5 MB). Peak memory consumption was 191.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:10,257 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-28 18:08:10,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.12 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:10,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.38 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:10,259 INFO L168 Benchmark]: Boogie Preprocessor took 51.35 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:10,259 INFO L168 Benchmark]: RCFGBuilder took 612.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:10,260 INFO L168 Benchmark]: TraceAbstraction took 3834.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.8 MB in the end (delta: 214.6 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:08:10,261 INFO L168 Benchmark]: Witness Printer took 79.88 ms. Allocated memory is still 1.2 GB. Free memory is still 891.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:08:10,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 359.12 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 33.38 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.35 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 612.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3834.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.8 MB in the end (delta: 214.6 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. * Witness Printer took 79.88 ms. Allocated memory is still 1.2 GB. Free memory is still 891.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 16]: Loop Invariant Derived loop invariant: (((((a == b || p2 == b) || !(\old(pp2) == \old(pp1))) || a == p1) || p2 == a) || !(\old(pp1) == \old(pp2))) || p1 == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 24 SDslu, 52 SDs, 0 SdLazy, 62 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 216 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 4030 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...