/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a_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/float_req_bl_1270a_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 fa333650cb1e4cf3e280683e8b2ad72d19029b0d --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/float_req_bl_1270a_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 fa333650cb1e4cf3e280683e8b2ad72d19029b0d --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:39:58,162 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:39:58,164 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:39:58,182 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:39:58,183 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:39:58,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:39:58,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:39:58,190 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:39:58,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:39:58,193 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:39:58,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:39:58,198 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:39:58,200 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:39:58,201 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:39:58,204 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:39:58,206 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:39:58,207 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:39:58,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:39:58,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:39:58,222 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:39:58,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:39:58,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:39:58,230 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:39:58,233 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:39:58,235 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:39:58,236 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:39:58,237 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:39:58,239 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:39:58,240 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:39:58,243 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:39:58,246 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:39:58,247 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:39:58,247 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:39:58,247 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:39:58,248 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:39:58,249 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:39:58,249 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:39:58,273 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:39:58,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:39:58,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:39:58,274 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:39:58,280 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:39:58,280 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:39:58,281 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:39:58,281 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:39:58,281 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:39:58,281 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:39:58,281 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:39:58,282 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:39:58,282 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:39:58,282 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:39:58,282 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:39:58,282 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:39:58,284 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:39:58,284 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:39:58,284 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:39:58,284 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:39:58,285 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:39:58,285 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:39:58,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:39:58,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:39:58,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:39:58,286 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:39:58,286 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:39:58,286 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:39:58,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:39:58,286 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 -> fa333650cb1e4cf3e280683e8b2ad72d19029b0d 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 18:39:58,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:39:58,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:39:58,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:39:58,395 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:39:58,396 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:39:58,397 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-09-21 18:39:58,750 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa46195ac/6503c6f99de247c6a500e0df36f8b9e9/FLAGd7c11ca9e [2018-09-21 18:39:58,957 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:39:58,958 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-09-21 18:39:58,977 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa46195ac/6503c6f99de247c6a500e0df36f8b9e9/FLAGd7c11ca9e [2018-09-21 18:39:59,005 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa46195ac/6503c6f99de247c6a500e0df36f8b9e9 [2018-09-21 18:39:59,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:39:59,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:39:59,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:59,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:39:59,027 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:39:59,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3a815a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59, skipping insertion in model container [2018-09-21 18:39:59,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,047 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:39:59,362 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:59,394 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:39:59,488 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:39:59,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59 WrapperNode [2018-09-21 18:39:59,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:39:59,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:39:59,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:39:59,539 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:39:59,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (1/1) ... [2018-09-21 18:39:59,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:39:59,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:39:59,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:39:59,638 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:39:59,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (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 18:39:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:39:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:39:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:39:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2018-09-21 18:39:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-09-21 18:39:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:39:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:39:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:39:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:39:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:39:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:39:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:39:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:39:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:39:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:39:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2018-09-21 18:39:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-09-21 18:39:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:39:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:39:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:39:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:39:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:40:01,073 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:40:01,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:01 BoogieIcfgContainer [2018-09-21 18:40:01,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:40:01,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:40:01,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:40:01,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:40:01,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:39:59" (1/3) ... [2018-09-21 18:40:01,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a665b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:01, skipping insertion in model container [2018-09-21 18:40:01,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:39:59" (2/3) ... [2018-09-21 18:40:01,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a665b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:01, skipping insertion in model container [2018-09-21 18:40:01,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:01" (3/3) ... [2018-09-21 18:40:01,084 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a_true-unreach-call.c [2018-09-21 18:40:01,095 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:40:01,105 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:40:01,152 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:40:01,152 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:40:01,153 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:40:01,153 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:40:01,153 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:40:01,153 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:40:01,154 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:40:01,155 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:40:01,155 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:40:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2018-09-21 18:40:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-21 18:40:01,197 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:01,198 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] [2018-09-21 18:40:01,201 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2013009825, now seen corresponding path program 1 times [2018-09-21 18:40:01,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:40:01,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:40:01,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:01,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:01,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:01,376 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 18:40:01,379 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:01,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:40:01,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:40:01,400 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:40:01,401 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:01,404 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 2 states. [2018-09-21 18:40:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:01,441 INFO L93 Difference]: Finished difference Result 232 states and 254 transitions. [2018-09-21 18:40:01,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:40:01,443 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-09-21 18:40:01,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:01,459 INFO L225 Difference]: With dead ends: 232 [2018-09-21 18:40:01,459 INFO L226 Difference]: Without dead ends: 228 [2018-09-21 18:40:01,462 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 18:40:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-21 18:40:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-09-21 18:40:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-09-21 18:40:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 250 transitions. [2018-09-21 18:40:01,528 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 250 transitions. Word has length 28 [2018-09-21 18:40:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:01,528 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 250 transitions. [2018-09-21 18:40:01,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:40:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 250 transitions. [2018-09-21 18:40:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-21 18:40:01,533 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:01,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:01,534 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash 237649631, now seen corresponding path program 1 times [2018-09-21 18:40:01,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:40:01,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:40:01,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:01,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:01,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:40:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:40:01,834 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:40:01,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:40:01 BoogieIcfgContainer [2018-09-21 18:40:01,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:40:01,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:40:01,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:40:01,898 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:40:01,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:01" (3/4) ... [2018-09-21 18:40:01,906 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:40:01,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:40:01,907 INFO L168 Benchmark]: Toolchain (without parser) took 2893.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -102.2 MB). Peak memory consumption was 53.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:01,909 INFO L168 Benchmark]: CDTParser took 0.40 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 18:40:01,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.34 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:01,912 INFO L168 Benchmark]: Boogie Preprocessor took 92.79 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:01,914 INFO L168 Benchmark]: RCFGBuilder took 1436.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:01,916 INFO L168 Benchmark]: TraceAbstraction took 822.33 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:01,917 INFO L168 Benchmark]: Witness Printer took 7.83 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 18:40:01,924 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 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 520.34 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 92.79 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1436.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -163.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 822.33 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * Witness Printer took 7.83 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: 234]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 118, overapproximation of bitwiseAnd at line 218. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=10737418246, \old(tiny_sqrt)=10737418251, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L229] float x = 1.0f / 0.0f; [L230] float y = __VERIFIER_nondet_float(); [L231] CALL, EXPR __ieee754_hypotf(x, y) VAL [\old(x)=10737418243, \old(y)=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L82] float a = x, b = y, t1, t2, y1, y2, w; [L82] float a = x, b = y, t1, t2, y1, y2, w; [L82] float a = x, b = y, t1, t2, y1, y2, w; [L83] __int32_t j, k, ha, hb; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L86] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L87] FCALL gf_u.value = (x) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L88] EXPR, FCALL gf_u.word VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, gf_u.word=6442450944, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L88] (ha) = gf_u.word VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, gf_u.word=6442450944, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L88] FCALL (ha) = gf_u.word VAL [(ha) = gf_u.word=10737418247, \old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418249:0}, gf_u.word=6442450944, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L89] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, ha=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L90] ha &= 0x7fffffffL VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L92] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L93] FCALL gf_u.value = (y) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L94] EXPR, FCALL gf_u.word VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, gf_u.word=10737418240, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L94] (hb) = gf_u.word VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, gf_u.word=10737418240, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L94] FCALL (hb) = gf_u.word VAL [(hb) = gf_u.word=10737418256, \old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, gf_u={10737418255:0}, gf_u.word=10737418240, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L95] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, hb=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L96] hb &= 0x7fffffffL VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418243, b=10737418252, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L97] COND TRUE hb > ha [L98] a = y [L99] b = x [L100] j = ha [L101] ha = hb [L102] hb = j VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L108] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L109] FCALL sf_u.word = (ha) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L110] EXPR, FCALL sf_u.value VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418252, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L110] (a) = sf_u.value VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L110] FCALL (a) = sf_u.value VAL [(a) = sf_u.value=10737418254, \old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418245:0}, sf_u.value=10737418257, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L111] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L113] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L114] FCALL sf_u.word = (hb) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L115] EXPR, FCALL sf_u.value VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418243, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L115] (b) = sf_u.value VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L115] FCALL (b) = sf_u.value VAL [(b) = sf_u.value=10737418253, \old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, sf_u={10737418255:0}, sf_u.value=10737418256, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L116] COND FALSE !(0) VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L117] COND TRUE (ha - hb) > 0xf000000L [L118] RET return a + b; VAL [\old(x)=10737418243, \old(y)=10737418252, a=10737418257, b=10737418256, ha=251658240, hb=-1, j=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L231] EXPR __ieee754_hypotf(x, y) VAL [__ieee754_hypotf(x, y)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L231] float res = __ieee754_hypotf(x, y); [L233] CALL, EXPR isinf_float(res) VAL [\old(x)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L212] __int32_t ix; VAL [\old(x)=10737418241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L214] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=10737418241, gf_u={10737418244:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L215] FCALL gf_u.value = (x) VAL [\old(x)=10737418241, gf_u={10737418244:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] EXPR, FCALL gf_u.word VAL [\old(x)=10737418241, gf_u={10737418244:0}, gf_u.word=-6442450944, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] (ix) = gf_u.word VAL [\old(x)=10737418241, gf_u={10737418244:0}, gf_u.word=-6442450944, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L216] FCALL (ix) = gf_u.word VAL [(ix) = gf_u.word=10737418250, \old(x)=10737418241, gf_u={10737418244:0}, gf_u.word=-6442450944, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L217] COND FALSE !(0) VAL [\old(x)=10737418241, ix=-2147483648, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L218] ix &= 0x7fffffff [L219] RET return ((ix) == 0x7f800000L); VAL [\old(x)=10737418241, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=10737418241] [L233] EXPR isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=10737418241, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] [L233] COND TRUE !isinf_float(res) [L234] __VERIFIER_error() VAL [one_sqrt=1, res=10737418241, tiny_sqrt=1/1000000000000000000000000000000, x=10737418243, y=10737418252] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 232 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 254 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=232occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 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 18:40:04,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:40:04,282 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:40:04,294 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:40:04,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:40:04,296 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:40:04,298 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:40:04,299 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:40:04,301 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:40:04,302 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:40:04,303 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:40:04,304 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:40:04,305 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:40:04,306 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:40:04,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:40:04,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:40:04,309 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:40:04,311 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:40:04,314 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:40:04,316 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:40:04,317 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:40:04,318 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:40:04,321 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:40:04,321 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:40:04,322 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:40:04,323 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:40:04,324 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:40:04,325 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:40:04,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:40:04,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:40:04,327 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:40:04,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:40:04,328 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:40:04,329 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:40:04,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:40:04,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:40:04,331 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:40:04,347 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:40:04,347 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:40:04,348 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:40:04,348 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:40:04,349 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:40:04,349 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:40:04,349 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:40:04,350 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:40:04,350 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:40:04,350 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:40:04,350 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:40:04,350 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:40:04,351 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:40:04,351 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:40:04,352 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:40:04,352 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:40:04,352 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:40:04,352 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:40:04,352 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:40:04,353 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:40:04,353 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:40:04,353 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:40:04,353 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:40:04,353 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:40:04,355 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:40:04,355 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:40:04,355 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:40:04,355 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:40:04,355 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:40:04,356 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:40:04,356 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:40:04,356 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 -> fa333650cb1e4cf3e280683e8b2ad72d19029b0d 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 18:40:04,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:40:04,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:40:04,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:40:04,454 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:40:04,455 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:40:04,455 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-09-21 18:40:04,861 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413336afd/c91744641c4146589c858f0d53823d17/FLAG7f6ee85f5 [2018-09-21 18:40:05,036 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:40:05,037 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1270a_true-unreach-call.c [2018-09-21 18:40:05,047 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413336afd/c91744641c4146589c858f0d53823d17/FLAG7f6ee85f5 [2018-09-21 18:40:05,066 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413336afd/c91744641c4146589c858f0d53823d17 [2018-09-21 18:40:05,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:40:05,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:40:05,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:05,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:40:05,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:40:05,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb51be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05, skipping insertion in model container [2018-09-21 18:40:05,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,100 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:40:05,398 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:05,416 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:40:05,498 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:05,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05 WrapperNode [2018-09-21 18:40:05,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:05,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:40:05,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:40:05,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:40:05,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... [2018-09-21 18:40:05,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:40:05,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:40:05,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:40:05,667 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:40:05,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:40:05,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:40:05,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:40:05,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2018-09-21 18:40:05,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_hypotf [2018-09-21 18:40:05,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2018-09-21 18:40:05,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:40:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:40:05,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:40:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2018-09-21 18:40:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:40:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:40:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:40:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:40:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:40:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:40:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_hypotf [2018-09-21 18:40:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2018-09-21 18:40:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:40:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:40:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:40:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:40:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:40:06,193 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:06,211 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:06,320 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:06,333 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:06,383 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:06,394 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:07,398 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:07,425 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:08,259 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:40:08,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:08 BoogieIcfgContainer [2018-09-21 18:40:08,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:40:08,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:40:08,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:40:08,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:40:08,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:40:05" (1/3) ... [2018-09-21 18:40:08,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2065abe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:08, skipping insertion in model container [2018-09-21 18:40:08,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:05" (2/3) ... [2018-09-21 18:40:08,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2065abe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:08, skipping insertion in model container [2018-09-21 18:40:08,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:08" (3/3) ... [2018-09-21 18:40:08,271 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270a_true-unreach-call.c [2018-09-21 18:40:08,281 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:40:08,291 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:40:08,335 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:40:08,336 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:40:08,336 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:40:08,337 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:40:08,337 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:40:08,337 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:40:08,337 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:40:08,337 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:40:08,337 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:40:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2018-09-21 18:40:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:40:08,375 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:08,377 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] [2018-09-21 18:40:08,380 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:08,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1998677788, now seen corresponding path program 1 times [2018-09-21 18:40:08,391 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:08,392 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) [2018-09-21 18:40:08,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:08,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:08,529 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 18:40:08,530 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:08,545 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:08,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:40:08,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:40:08,562 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:40:08,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:08,566 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 2 states. [2018-09-21 18:40:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:08,602 INFO L93 Difference]: Finished difference Result 231 states and 253 transitions. [2018-09-21 18:40:08,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:40:08,605 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-09-21 18:40:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:08,620 INFO L225 Difference]: With dead ends: 231 [2018-09-21 18:40:08,620 INFO L226 Difference]: Without dead ends: 227 [2018-09-21 18:40:08,622 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 18:40:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-21 18:40:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-21 18:40:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-21 18:40:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 249 transitions. [2018-09-21 18:40:08,690 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 249 transitions. Word has length 27 [2018-09-21 18:40:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:08,690 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 249 transitions. [2018-09-21 18:40:08,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:40:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 249 transitions. [2018-09-21 18:40:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-21 18:40:08,695 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:08,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:40:08,695 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:08,696 INFO L82 PathProgramCache]: Analyzing trace with hash -711257081, now seen corresponding path program 1 times [2018-09-21 18:40:08,698 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:08,698 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 18:40:08,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:08,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:09,099 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 11 treesize of output 8 [2018-09-21 18:40:09,116 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 8 treesize of output 7 [2018-09-21 18:40:09,116 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:09,148 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:09,224 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:09,224 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:09,344 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 29 treesize of output 21 [2018-09-21 18:40:09,357 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 21 treesize of output 9 [2018-09-21 18:40:09,357 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:09,384 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:09,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:09,416 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:10,571 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 18:40:10,572 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:10,592 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:10,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-21 18:40:10,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-21 18:40:10,594 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-21 18:40:10,598 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-09-21 18:40:10,598 INFO L87 Difference]: Start difference. First operand 227 states and 249 transitions. Second operand 11 states. [2018-09-21 18:41:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:24,858 INFO L93 Difference]: Finished difference Result 527 states and 573 transitions. [2018-09-21 18:41:24,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:41:24,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2018-09-21 18:41:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:24,869 INFO L225 Difference]: With dead ends: 527 [2018-09-21 18:41:24,870 INFO L226 Difference]: Without dead ends: 371 [2018-09-21 18:41:24,871 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2018-09-21 18:41:24,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-21 18:41:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 253. [2018-09-21 18:41:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-09-21 18:41:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 277 transitions. [2018-09-21 18:41:24,901 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 277 transitions. Word has length 72 [2018-09-21 18:41:24,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:24,902 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 277 transitions. [2018-09-21 18:41:24,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-21 18:41:24,902 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 277 transitions. [2018-09-21 18:41:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-21 18:41:24,906 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:24,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:24,906 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash -463110587, now seen corresponding path program 1 times [2018-09-21 18:41:24,908 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:24,908 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) [2018-09-21 18:41:24,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:25,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:25,270 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 11 treesize of output 8 [2018-09-21 18:41:25,287 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 8 treesize of output 7 [2018-09-21 18:41:25,288 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:25,315 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:25,382 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:25,383 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:41:25,501 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 29 treesize of output 21 [2018-09-21 18:41:25,517 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 21 treesize of output 9 [2018-09-21 18:41:25,517 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:25,542 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:25,567 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:25,567 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:41:26,200 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 11 treesize of output 8 [2018-09-21 18:41:26,205 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 8 treesize of output 7 [2018-09-21 18:41:26,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:26,227 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:26,249 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:41:26,250 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2018-09-21 18:41:26,349 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 29 treesize of output 21 [2018-09-21 18:41:26,363 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 21 treesize of output 9 [2018-09-21 18:41:26,363 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:26,371 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:26,427 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:41:26,429 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:29 [2018-09-21 18:41:26,705 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 11 treesize of output 8 [2018-09-21 18:41:26,711 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 8 treesize of output 7 [2018-09-21 18:41:26,712 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:26,721 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:26,755 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:41:26,756 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:36 [2018-09-21 18:41:27,002 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-09-21 18:41:27,095 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 29 treesize of output 21 [2018-09-21 18:41:27,103 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 21 treesize of output 9 [2018-09-21 18:41:27,104 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:27,112 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:27,153 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:41:27,153 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:57, output treesize:38 [2018-09-21 18:41:30,679 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 11 treesize of output 8 [2018-09-21 18:41:30,683 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 8 treesize of output 7 [2018-09-21 18:41:30,683 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:30,687 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:30,698 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:30,699 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:41:30,979 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 29 treesize of output 21 [2018-09-21 18:41:30,999 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 21 treesize of output 9 [2018-09-21 18:41:31,000 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:31,025 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:31,048 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:31,048 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:41:32,460 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 18:41:32,460 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:32,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:32,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2018-09-21 18:41:32,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-21 18:41:32,476 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-21 18:41:32,476 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2018-09-21 18:41:32,481 INFO L87 Difference]: Start difference. First operand 253 states and 277 transitions. Second operand 24 states. [2018-09-21 18:41:35,128 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-21 18:41:35,902 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-21 18:41:36,949 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-09-21 18:41:37,327 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-09-21 18:41:40,336 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:254) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:690) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:603) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-09-21 18:41:40,346 INFO L168 Benchmark]: Toolchain (without parser) took 95275.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 953.2 MB in the beginning and 983.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 162.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:40,347 INFO L168 Benchmark]: CDTParser took 0.18 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 18:41:40,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 483.90 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:40,349 INFO L168 Benchmark]: Boogie Preprocessor took 107.48 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:40,351 INFO L168 Benchmark]: RCFGBuilder took 2593.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -125.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:40,352 INFO L168 Benchmark]: TraceAbstraction took 92084.00 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 983.7 MB in the end (delta: 73.9 MB). Peak memory consumption was 139.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:40,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 483.90 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 107.48 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2593.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -125.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 92084.00 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 983.7 MB in the end (delta: 73.9 MB). Peak memory consumption was 139.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...