/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.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 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ........................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:10:10,255 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:10:10,257 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:10:10,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:10:10,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:10:10,271 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:10:10,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:10:10,274 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:10:10,276 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:10:10,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:10:10,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:10:10,279 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:10:10,280 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:10:10,281 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:10:10,282 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:10:10,283 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:10:10,283 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:10:10,285 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:10:10,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:10:10,289 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:10:10,290 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:10:10,292 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:10:10,294 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:10:10,295 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:10:10,295 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:10:10,296 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:10:10,297 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:10:10,298 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:10:10,299 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:10:10,300 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:10:10,300 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:10:10,301 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:10:10,301 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:10:10,301 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:10:10,308 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:10:10,308 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:10:10,309 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:10:10,339 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:10:10,340 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:10:10,341 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:10:10,341 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:10:10,342 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:10:10,342 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:10:10,342 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:10:10,343 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:10:10,343 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:10:10,343 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:10:10,343 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:10:10,344 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:10:10,344 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:10:10,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:10:10,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:10:10,344 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:10:10,344 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:10:10,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:10:10,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:10:10,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:10:10,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:10:10,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:10:10,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:10:10,347 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:10:10,347 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:10:10,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:10:10,348 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:10:10,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:10:10,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:10:10,348 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 -> 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:10:10,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:10:10,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:10:10,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:10:10,438 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:10:10,438 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:10:10,439 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-09-21 18:10:10,788 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b18d2a13/289fbdf6ff7a4c7cb41bbeefcaf97920/FLAG8be69fb9f [2018-09-21 18:10:11,008 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:10:11,013 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-09-21 18:10:11,028 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b18d2a13/289fbdf6ff7a4c7cb41bbeefcaf97920/FLAG8be69fb9f [2018-09-21 18:10:11,061 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b18d2a13/289fbdf6ff7a4c7cb41bbeefcaf97920 [2018-09-21 18:10:11,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:10:11,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:10:11,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:11,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:10:11,085 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:10:11,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e779ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11, skipping insertion in model container [2018-09-21 18:10:11,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,105 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:10:11,394 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:11,411 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:10:11,455 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:11,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11 WrapperNode [2018-09-21 18:10:11,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:11,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:10:11,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:10:11,500 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:10:11,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (1/1) ... [2018-09-21 18:10:11,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:10:11,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:10:11,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:10:11,551 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:10:11,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (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 [2018-09-21 18:10:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:10:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:10:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:10:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-09-21 18:10:11,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:10:11,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:10:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:10:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:10:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-09-21 18:10:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:10:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:10:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:10:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:10:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:10:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:10:12,328 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:10:12,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:12 BoogieIcfgContainer [2018-09-21 18:10:12,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:10:12,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:10:12,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:10:12,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:10:12,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:10:11" (1/3) ... [2018-09-21 18:10:12,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1d3524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:12, skipping insertion in model container [2018-09-21 18:10:12,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:11" (2/3) ... [2018-09-21 18:10:12,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1d3524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:12, skipping insertion in model container [2018-09-21 18:10:12,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:12" (3/3) ... [2018-09-21 18:10:12,344 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a_true-unreach-call.c [2018-09-21 18:10:12,354 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:10:12,363 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:10:12,404 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:10:12,405 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:10:12,405 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:10:12,406 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:10:12,406 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:10:12,406 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:10:12,406 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:10:12,407 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:10:12,407 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:10:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-09-21 18:10:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-21 18:10:12,439 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:12,440 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:12,442 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:12,448 INFO L82 PathProgramCache]: Analyzing trace with hash -141193166, now seen corresponding path program 1 times [2018-09-21 18:10:12,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:10:12,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:10:12,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:12,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:12,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:10:12,598 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:12,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:10:12,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:10:12,615 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:10:12,616 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:10:12,618 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-09-21 18:10:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:12,641 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-09-21 18:10:12,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:10:12,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-21 18:10:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:12,654 INFO L225 Difference]: With dead ends: 73 [2018-09-21 18:10:12,655 INFO L226 Difference]: Without dead ends: 69 [2018-09-21 18:10:12,656 INFO L606 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 [2018-09-21 18:10:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-21 18:10:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-21 18:10:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-21 18:10:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2018-09-21 18:10:12,702 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 19 [2018-09-21 18:10:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:12,703 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2018-09-21 18:10:12,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:10:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2018-09-21 18:10:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-21 18:10:12,704 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:12,705 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:12,705 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash 801598628, now seen corresponding path program 1 times [2018-09-21 18:10:12,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:10:12,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:10:12,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:12,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:12,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:10:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:10:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:10:12,862 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:10:12,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:10:12 BoogieIcfgContainer [2018-09-21 18:10:12,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:10:12,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:10:12,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:10:12,901 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:10:12,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:12" (3/4) ... [2018-09-21 18:10:12,906 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:10:12,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:10:12,907 INFO L168 Benchmark]: Toolchain (without parser) took 1839.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -122.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:12,909 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:10:12,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.69 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:12,910 INFO L168 Benchmark]: Boogie Preprocessor took 50.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:12,911 INFO L168 Benchmark]: RCFGBuilder took 781.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:12,912 INFO L168 Benchmark]: TraceAbstraction took 566.71 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:12,913 INFO L168 Benchmark]: Witness Printer took 5.65 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. [2018-09-21 18:10:12,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 425.69 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 781.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 566.71 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 90, overapproximation of shiftRight at line 34, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L86] double x = 0.0; VAL [x=0] [L87] CALL, EXPR round_double(x) VAL [\old(x)=0] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=0, x=0] [L21] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={6442450947:0}, x=0] [L22] FCALL ew_u.value = (x) VAL [\old(x)=0, ew_u={6442450947:0}, x=0] [L23] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=0, ew_u={6442450947:0}, ew_u.parts.msw=6442450943, x=0] [L23] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={6442450947:0}, ew_u.parts.msw=6442450943, msw=2147483647, x=0] [L23] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=6442450944, \old(x)=0, ew_u={6442450947:0}, ew_u.parts.msw=6442450943, msw=2147483647, x=0] [L24] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=0, ew_u={6442450947:0}, ew_u.parts.lsw=0, msw=2147483647, x=0] [L24] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={6442450947:0}, ew_u.parts.lsw=0, lsw=0, msw=2147483647, x=0] [L24] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=6442450946, \old(x)=0, ew_u={6442450947:0}, ew_u.parts.lsw=0, lsw=0, msw=2147483647, x=0] [L25] COND FALSE !(0) VAL [\old(x)=0, lsw=0, msw=2147483647, x=0] [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] RET return x; VAL [\old(x)=0, \result=0, exponent_less_1023=0, lsw=0, msw=2147483647, x=0] [L87] EXPR round_double(x) VAL [round_double(x)=0, x=0] [L87] double res = round_double(x); [L90] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L90] COND FALSE, EXPR !(res == 0.0 && __signbit_double(res) == 0) VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L90] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L91] __VERIFIER_error() VAL [res=0, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:10:15,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:10:15,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:10:15,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:10:15,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:10:15,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:10:15,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:10:15,377 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:10:15,379 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:10:15,380 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:10:15,381 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:10:15,382 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:10:15,383 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:10:15,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:10:15,385 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:10:15,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:10:15,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:10:15,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:10:15,391 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:10:15,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:10:15,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:10:15,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:10:15,398 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:10:15,399 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:10:15,399 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:10:15,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:10:15,403 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:10:15,404 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:10:15,405 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:10:15,409 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:10:15,409 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:10:15,410 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:10:15,410 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:10:15,410 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:10:15,412 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:10:15,413 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:10:15,413 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:10:15,447 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:10:15,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:10:15,449 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:10:15,450 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:10:15,450 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:10:15,452 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:10:15,452 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:10:15,453 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:10:15,453 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:10:15,454 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:10:15,454 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:10:15,454 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:10:15,454 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:10:15,454 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:10:15,454 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:10:15,455 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:10:15,456 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:10:15,456 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:10:15,456 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:10:15,456 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:10:15,456 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:10:15,457 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:10:15,457 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:10:15,457 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:10:15,457 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:10:15,460 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:10:15,460 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:10:15,460 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:10:15,461 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:10:15,461 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:10:15,461 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:10:15,462 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 -> 8d015b2bc8cb93a5e0ac1240dd23d0cf22b0709d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:10:15,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:10:15,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:10:15,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:10:15,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:10:15,559 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:10:15,560 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-09-21 18:10:15,924 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a8a6a49/9f77ec5da05f45d087ad1463bcd805c1/FLAG026f5b934 [2018-09-21 18:10:16,106 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:10:16,107 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a_true-unreach-call.c [2018-09-21 18:10:16,121 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a8a6a49/9f77ec5da05f45d087ad1463bcd805c1/FLAG026f5b934 [2018-09-21 18:10:16,140 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91a8a6a49/9f77ec5da05f45d087ad1463bcd805c1 [2018-09-21 18:10:16,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:10:16,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:10:16,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:16,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:10:16,158 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:10:16,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69759c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16, skipping insertion in model container [2018-09-21 18:10:16,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,179 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:10:16,410 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:16,429 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:10:16,460 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:10:16,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16 WrapperNode [2018-09-21 18:10:16,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:10:16,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:10:16,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:10:16,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:10:16,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (1/1) ... [2018-09-21 18:10:16,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:10:16,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:10:16,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:10:16,605 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:10:16,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (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 [2018-09-21 18:10:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:10:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:10:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:10:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2018-09-21 18:10:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:10:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:10:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:10:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:10:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:10:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:10:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:10:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:10:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:10:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:10:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:10:17,055 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:17,109 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:17,273 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:17,292 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:17,306 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:10:17,518 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:10:17,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:17 BoogieIcfgContainer [2018-09-21 18:10:17,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:10:17,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:10:17,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:10:17,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:10:17,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:10:16" (1/3) ... [2018-09-21 18:10:17,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21772548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:17, skipping insertion in model container [2018-09-21 18:10:17,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:10:16" (2/3) ... [2018-09-21 18:10:17,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21772548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:10:17, skipping insertion in model container [2018-09-21 18:10:17,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:17" (3/3) ... [2018-09-21 18:10:17,528 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a_true-unreach-call.c [2018-09-21 18:10:17,538 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:10:17,548 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:10:17,594 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:10:17,595 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:10:17,595 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:10:17,595 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:10:17,595 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:10:17,595 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:10:17,596 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:10:17,596 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:10:17,596 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:10:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-09-21 18:10:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-21 18:10:17,625 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:17,626 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:17,628 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash -141193166, now seen corresponding path program 1 times [2018-09-21 18:10:17,638 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:17,638 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:17,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:17,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:10:17,738 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:17,751 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:17,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:10:17,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:10:17,767 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:10:17,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:10:17,770 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-09-21 18:10:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:17,793 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-09-21 18:10:17,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:10:17,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-21 18:10:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:17,808 INFO L225 Difference]: With dead ends: 73 [2018-09-21 18:10:17,808 INFO L226 Difference]: Without dead ends: 69 [2018-09-21 18:10:17,810 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:10:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-21 18:10:17,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-21 18:10:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-21 18:10:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2018-09-21 18:10:17,855 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 19 [2018-09-21 18:10:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:17,856 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2018-09-21 18:10:17,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:10:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2018-09-21 18:10:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-21 18:10:17,857 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:17,858 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:17,858 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:17,858 INFO L82 PathProgramCache]: Analyzing trace with hash 801598628, now seen corresponding path program 1 times [2018-09-21 18:10:17,859 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:17,859 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:17,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:17,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:18,065 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:10:18,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:10:18,082 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:18,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:18,138 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:18,139 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:18,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:10:18,198 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:10:18,199 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:18,205 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:18,300 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:18,301 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:10:18,619 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:18,633 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:18,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:10:18,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:10:18,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:10:18,636 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:10:18,636 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 9 states. [2018-09-21 18:10:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:22,138 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2018-09-21 18:10:22,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:10:22,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-09-21 18:10:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:22,146 INFO L225 Difference]: With dead ends: 102 [2018-09-21 18:10:22,146 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:10:22,147 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-09-21 18:10:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:10:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:10:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:10:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-09-21 18:10:22,157 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 32 [2018-09-21 18:10:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:22,158 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-09-21 18:10:22,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:10:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-09-21 18:10:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:10:22,160 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:22,160 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:22,161 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:22,161 INFO L82 PathProgramCache]: Analyzing trace with hash -454012241, now seen corresponding path program 1 times [2018-09-21 18:10:22,162 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:22,162 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:22,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:22,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:22,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:10:22,306 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:10:22,307 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:22,343 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:22,363 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:22,364 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:22,404 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:10:22,411 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:10:22,411 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:22,415 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:22,426 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:22,427 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:10:22,735 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:22,752 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:22,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:10:22,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:10:22,753 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:10:22,753 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:10:22,753 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 9 states. [2018-09-21 18:10:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:24,559 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-09-21 18:10:24,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:10:24,562 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-09-21 18:10:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:24,563 INFO L225 Difference]: With dead ends: 79 [2018-09-21 18:10:24,563 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:10:24,564 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-09-21 18:10:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:10:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:10:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:10:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-21 18:10:24,574 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 46 [2018-09-21 18:10:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:24,574 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-21 18:10:24,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:10:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-21 18:10:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-21 18:10:24,577 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:24,577 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:24,577 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash -31310415, now seen corresponding path program 1 times [2018-09-21 18:10:24,579 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:24,579 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:24,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:24,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:24,739 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-09-21 18:10:24,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-09-21 18:10:24,745 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:24,751 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:24,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:24,766 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2018-09-21 18:10:24,806 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-09-21 18:10:24,812 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:24,816 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 25 [2018-09-21 18:10:24,817 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:24,834 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:24,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:24,847 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:19 [2018-09-21 18:10:24,899 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2018-09-21 18:10:24,936 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:24,942 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2018-09-21 18:10:24,942 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:24,954 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:24,957 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:24,957 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:64, output treesize:21 [2018-09-21 18:10:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:10:25,145 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:25,155 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:25,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-21 18:10:25,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-21 18:10:25,156 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-21 18:10:25,157 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-09-21 18:10:25,157 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 11 states. [2018-09-21 18:10:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:25,931 INFO L93 Difference]: Finished difference Result 63 states and 62 transitions. [2018-09-21 18:10:25,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:10:25,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2018-09-21 18:10:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:25,937 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:10:25,937 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:10:25,938 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-09-21 18:10:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:10:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:10:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:10:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 62 transitions. [2018-09-21 18:10:25,944 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 62 transitions. Word has length 46 [2018-09-21 18:10:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:25,945 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 62 transitions. [2018-09-21 18:10:25,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-21 18:10:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 62 transitions. [2018-09-21 18:10:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-21 18:10:25,948 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:10:25,948 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:10:25,948 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:10:25,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1741989352, now seen corresponding path program 1 times [2018-09-21 18:10:25,949 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:10:25,949 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:10:25,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:10:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:10:26,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:10:26,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:10:26,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:10:26,129 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,135 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,153 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,153 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:26,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:10:26,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:10:26,235 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,249 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,260 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,261 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:26,389 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-09-21 18:10:26,396 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-09-21 18:10:26,396 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,402 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,422 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,422 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2018-09-21 18:10:26,633 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-09-21 18:10:26,641 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:26,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 26 [2018-09-21 18:10:26,647 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,748 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:26,769 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,769 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:22 [2018-09-21 18:10:26,790 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2018-09-21 18:10:26,800 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:10:26,805 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2018-09-21 18:10:26,807 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,818 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,835 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:26,835 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:67, output treesize:34 [2018-09-21 18:10:27,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:10:27,590 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:10:27,590 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:27,596 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:27,612 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:27,612 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:10:27,766 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:10:27,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:10:27,778 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:10:27,781 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:10:27,790 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:10:27,790 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:10:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:10:28,437 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:10:28,452 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:10:28,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2018-09-21 18:10:28,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-21 18:10:28,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-21 18:10:28,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-09-21 18:10:28,453 INFO L87 Difference]: Start difference. First operand 63 states and 62 transitions. Second operand 21 states. [2018-09-21 18:10:33,935 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-21 18:10:35,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:10:35,622 INFO L93 Difference]: Finished difference Result 61 states and 60 transitions. [2018-09-21 18:10:35,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-21 18:10:35,623 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 62 [2018-09-21 18:10:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:10:35,624 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:10:35,624 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:10:35,625 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2018-09-21 18:10:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:10:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:10:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:10:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:10:35,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2018-09-21 18:10:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:10:35,627 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:10:35,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-21 18:10:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:10:35,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:10:35,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:10:35 BoogieIcfgContainer [2018-09-21 18:10:35,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:10:35,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:10:35,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:10:35,634 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:10:35,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:10:17" (3/4) ... [2018-09-21 18:10:35,638 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:10:35,644 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-21 18:10:35,644 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:10:35,644 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure round_double [2018-09-21 18:10:35,645 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-09-21 18:10:35,645 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:10:35,650 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:10:35,651 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-21 18:10:35,651 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:10:35,717 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:10:35,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:10:35,722 INFO L168 Benchmark]: Toolchain (without parser) took 19577.13 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 227.0 MB). Free memory was 950.5 MB in the beginning and 999.0 MB in the end (delta: -48.5 MB). Peak memory consumption was 178.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:35,723 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:10:35,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.99 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:35,724 INFO L168 Benchmark]: Boogie Preprocessor took 85.21 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:35,726 INFO L168 Benchmark]: RCFGBuilder took 915.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:35,731 INFO L168 Benchmark]: TraceAbstraction took 18113.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 125.8 MB). Peak memory consumption was 187.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:35,732 INFO L168 Benchmark]: Witness Printer took 86.58 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 999.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:10:35,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 368.99 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 85.21 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 915.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18113.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 125.8 MB). Peak memory consumption was 187.2 MB. Max. memory is 11.5 GB. * Witness Printer took 86.58 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 999.0 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. SAFE Result, 18.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 13.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 285 SDtfs, 300 SDslu, 1553 SDs, 0 SdLazy, 807 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 200 ConstructedInterpolants, 110 QuantifiedInterpolants, 117283 SizeOfPredicates, 45 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...