/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0621b_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_0621b_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 53ee99fff779a5c6f230b5ead8806e6c8136f784 --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_0621b_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 53ee99fff779a5c6f230b5ead8806e6c8136f784 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:20:55,196 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:20:55,198 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:20:55,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:20:55,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:20:55,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:20:55,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:20:55,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:20:55,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:20:55,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:20:55,224 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:20:55,224 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:20:55,226 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:20:55,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:20:55,231 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:20:55,234 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:20:55,240 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:20:55,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:20:55,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:20:55,245 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:20:55,246 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:20:55,247 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:20:55,249 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:20:55,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:20:55,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:20:55,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:20:55,252 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:20:55,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:20:55,253 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:20:55,254 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:20:55,255 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:20:55,255 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:20:55,255 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:20:55,256 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:20:55,257 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:20:55,257 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:20:55,258 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:20:55,273 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:20:55,273 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:20:55,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:20:55,274 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:20:55,275 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:20:55,275 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:20:55,275 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:20:55,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:20:55,276 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:20:55,276 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:20:55,276 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:20:55,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:20:55,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:20:55,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:20:55,277 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:20:55,277 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:20:55,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:20:55,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:20:55,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:20:55,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:20:55,278 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:20:55,278 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:20:55,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:55,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:20:55,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:20:55,279 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:20:55,280 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:20:55,281 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:20:55,281 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:20:55,281 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 -> 53ee99fff779a5c6f230b5ead8806e6c8136f784 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 18:20:55,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:20:55,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:20:55,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:20:55,357 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:20:55,357 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:20:55,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0621b_true-unreach-call.c [2018-09-21 18:20:55,744 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aeafaaf6/7a54fc8b906d4eb493056c2c7c10aad4/FLAGc373b07de [2018-09-21 18:20:55,924 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:20:55,925 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0621b_true-unreach-call.c [2018-09-21 18:20:55,941 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aeafaaf6/7a54fc8b906d4eb493056c2c7c10aad4/FLAGc373b07de [2018-09-21 18:20:55,962 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0aeafaaf6/7a54fc8b906d4eb493056c2c7c10aad4 [2018-09-21 18:20:55,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:20:55,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:20:55,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:55,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:20:55,978 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:20:55,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:55" (1/1) ... [2018-09-21 18:20:55,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119ea16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:55, skipping insertion in model container [2018-09-21 18:20:55,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:55" (1/1) ... [2018-09-21 18:20:55,996 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:20:56,249 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:56,275 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:20:56,301 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:56,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56 WrapperNode [2018-09-21 18:20:56,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:56,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:20:56,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:20:56,348 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:20:56,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (1/1) ... [2018-09-21 18:20:56,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:20:56,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:20:56,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:20:56,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:20:56,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (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 18:20:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:20:56,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:20:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:20:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:20:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-09-21 18:20:56,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:20:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:20:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:20:56,575 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:20:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:20:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:20:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:20:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:20:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:20:56,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:20:56,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:20:57,221 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:20:57,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:57 BoogieIcfgContainer [2018-09-21 18:20:57,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:20:57,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:20:57,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:20:57,227 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:20:57,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:20:55" (1/3) ... [2018-09-21 18:20:57,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cefa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:57, skipping insertion in model container [2018-09-21 18:20:57,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:56" (2/3) ... [2018-09-21 18:20:57,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cefa94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:57, skipping insertion in model container [2018-09-21 18:20:57,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:57" (3/3) ... [2018-09-21 18:20:57,231 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621b_true-unreach-call.c [2018-09-21 18:20:57,243 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:20:57,252 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:20:57,296 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:20:57,297 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:20:57,297 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:20:57,297 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:20:57,298 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:20:57,298 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:20:57,298 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:20:57,298 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:20:57,298 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:20:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-09-21 18:20:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-21 18:20:57,329 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:57,330 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:57,333 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:57,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1907182082, now seen corresponding path program 1 times [2018-09-21 18:20:57,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:20:57,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:20:57,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:57,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:57,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:57,510 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 18:20:57,513 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:57,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:20:57,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:20:57,531 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:20:57,531 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:20:57,534 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-09-21 18:20:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:20:57,556 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2018-09-21 18:20:57,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:20:57,557 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-21 18:20:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:20:57,571 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:20:57,571 INFO L226 Difference]: Without dead ends: 65 [2018-09-21 18:20:57,574 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 18:20:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-21 18:20:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-21 18:20:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:20:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2018-09-21 18:20:57,621 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 17 [2018-09-21 18:20:57,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:20:57,622 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2018-09-21 18:20:57,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:20:57,622 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2018-09-21 18:20:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:20:57,623 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:57,624 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] [2018-09-21 18:20:57,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:57,624 INFO L82 PathProgramCache]: Analyzing trace with hash -26949235, now seen corresponding path program 1 times [2018-09-21 18:20:57,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:20:57,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:20:57,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:57,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:57,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:20:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:20:57,779 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:20:57,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:20:57 BoogieIcfgContainer [2018-09-21 18:20:57,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:20:57,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:20:57,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:20:57,836 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:20:57,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:57" (3/4) ... [2018-09-21 18:20:57,844 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:20:57,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:20:57,846 INFO L168 Benchmark]: Toolchain (without parser) took 1879.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -129.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:57,848 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:20:57,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.92 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:57,850 INFO L168 Benchmark]: Boogie Preprocessor took 89.40 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:57,851 INFO L168 Benchmark]: RCFGBuilder took 784.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:57,852 INFO L168 Benchmark]: TraceAbstraction took 612.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:57,853 INFO L168 Benchmark]: Witness Printer took 9.12 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 18:20:57,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 376.92 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 89.40 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 784.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -172.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 612.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 9.12 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: 130]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 129, overapproximation of someUnaryDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 65, overapproximation of someBinaryArithmeticFLOAToperation at line 68. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L52-L54] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [\old(huge_atan)=26, \old(huge_floor)=22, \old(one_atan)=13, \old(pi)=23, \old(pi_o_2)=14, \old(pi_o_4)=19, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L126] float x = -1.0f / 0.0f; VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L127] CALL, EXPR atan_float(x) VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L57] float w, s1, s2, z; [L58] __int32_t ix, hx, id; VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L61] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=21, gf_u={17:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L62] FCALL gf_u.value = (x) VAL [\old(x)=21, gf_u={17:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L63] EXPR, FCALL gf_u.word VAL [\old(x)=21, gf_u={17:0}, gf_u.word=12, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L63] (hx) = gf_u.word VAL [\old(x)=21, gf_u={17:0}, gf_u.word=12, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L63] FCALL (hx) = gf_u.word VAL [(hx) = gf_u.word=20, \old(x)=21, gf_u={17:0}, gf_u.word=12, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L64] COND FALSE !(0) VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L65] ix = hx & 0x7fffffff VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L66] COND TRUE ix >= 0x50800000 VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L67] COND TRUE ((ix) > 0x7f800000L) [L68] RET return x + x; VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L127] EXPR atan_float(x) VAL [atan_float(x)=18, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L127] float res = atan_float(x); [L129] COND TRUE res != -pi_o_2 VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=18, x=21] [L130] __VERIFIER_error() VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=18, x=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 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=69occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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 18:21:00,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:21:00,235 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:21:00,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:21:00,254 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:21:00,255 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:21:00,258 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:21:00,260 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:21:00,261 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:21:00,262 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:21:00,263 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:21:00,263 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:21:00,264 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:21:00,265 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:21:00,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:21:00,267 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:21:00,268 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:21:00,270 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:21:00,272 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:21:00,274 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:21:00,275 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:21:00,276 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:21:00,279 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:21:00,279 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:21:00,279 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:21:00,280 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:21:00,281 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:21:00,282 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:21:00,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:21:00,284 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:21:00,284 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:21:00,285 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:21:00,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:21:00,286 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:21:00,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:21:00,287 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:21:00,288 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:21:00,304 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:21:00,304 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:21:00,305 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:21:00,306 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:21:00,306 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:21:00,307 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:21:00,307 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:21:00,307 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:21:00,307 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:21:00,307 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:21:00,308 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:21:00,308 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:21:00,308 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:21:00,308 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:21:00,308 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:21:00,309 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:21:00,309 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:21:00,309 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:21:00,309 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:21:00,309 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:21:00,310 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:21:00,310 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:21:00,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:21:00,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:21:00,310 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:21:00,311 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:21:00,311 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:21:00,311 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:21:00,311 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:21:00,311 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:21:00,311 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:21:00,312 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 -> 53ee99fff779a5c6f230b5ead8806e6c8136f784 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 18:21:00,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:21:00,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:21:00,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:21:00,409 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:21:00,409 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:21:00,410 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0621b_true-unreach-call.c [2018-09-21 18:21:00,665 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2804062/4e8833b12d8f4036ad23a78883e664b2/FLAGf73101dc4 [2018-09-21 18:21:00,909 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:21:00,910 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0621b_true-unreach-call.c [2018-09-21 18:21:00,919 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2804062/4e8833b12d8f4036ad23a78883e664b2/FLAGf73101dc4 [2018-09-21 18:21:00,937 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff2804062/4e8833b12d8f4036ad23a78883e664b2 [2018-09-21 18:21:00,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:21:00,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:21:00,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:21:00,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:21:00,954 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:21:00,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:21:00" (1/1) ... [2018-09-21 18:21:00,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b47d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:00, skipping insertion in model container [2018-09-21 18:21:00,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:21:00" (1/1) ... [2018-09-21 18:21:00,972 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:21:01,269 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:21:01,300 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:21:01,371 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:21:01,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01 WrapperNode [2018-09-21 18:21:01,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:21:01,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:21:01,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:21:01,415 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:21:01,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (1/1) ... [2018-09-21 18:21:01,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:21:01,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:21:01,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:21:01,501 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:21:01,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (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 18:21:01,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:21:01,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:21:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:21:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:21:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-09-21 18:21:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:21:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:21:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:21:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:21:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:21:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-09-21 18:21:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:21:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:21:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:21:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:21:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:21:04,016 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:21:04,032 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:21:05,432 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:21:07,616 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:21:14,552 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:21:14,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:21:14 BoogieIcfgContainer [2018-09-21 18:21:14,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:21:14,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:21:14,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:21:14,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:21:14,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:21:00" (1/3) ... [2018-09-21 18:21:14,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125ef9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:21:14, skipping insertion in model container [2018-09-21 18:21:14,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:21:01" (2/3) ... [2018-09-21 18:21:14,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125ef9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:21:14, skipping insertion in model container [2018-09-21 18:21:14,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:21:14" (3/3) ... [2018-09-21 18:21:14,562 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621b_true-unreach-call.c [2018-09-21 18:21:14,572 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:21:14,581 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:21:14,619 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:21:14,620 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:21:14,620 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:21:14,621 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:21:14,621 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:21:14,621 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:21:14,621 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:21:14,621 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:21:14,621 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:21:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-09-21 18:21:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-21 18:21:14,656 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:14,657 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:21:14,660 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:14,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1907182082, now seen corresponding path program 1 times [2018-09-21 18:21:14,672 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:14,672 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:14,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:14,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:14,826 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 18:21:14,827 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:14,845 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:14,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:21:14,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:21:14,865 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:21:14,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:21:14,868 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-09-21 18:21:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:14,889 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2018-09-21 18:21:14,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:21:14,891 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-21 18:21:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:14,904 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:21:14,904 INFO L226 Difference]: Without dead ends: 65 [2018-09-21 18:21:14,906 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 18:21:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-21 18:21:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-21 18:21:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:21:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2018-09-21 18:21:14,957 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 17 [2018-09-21 18:21:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:14,957 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2018-09-21 18:21:14,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:21:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2018-09-21 18:21:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:21:14,960 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:14,960 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] [2018-09-21 18:21:14,960 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:14,960 INFO L82 PathProgramCache]: Analyzing trace with hash -26949235, now seen corresponding path program 1 times [2018-09-21 18:21:14,961 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:14,962 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 18:21:14,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:15,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:15,176 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 18:21:15,182 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 18:21:15,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:15,187 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:15,216 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 18:21:15,217 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:15,332 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 18:21:15,352 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 18:21:15,353 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:15,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:15,416 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 18:21:15,417 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:15,800 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 18:21:15,800 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:15,820 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:15,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:21:15,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:21:15,823 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:21:15,825 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:21:15,826 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 9 states. [2018-09-21 18:21:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:29,384 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2018-09-21 18:21:29,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:21:29,455 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-09-21 18:21:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:29,459 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:21:29,459 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:21:29,461 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:21:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:21:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-21 18:21:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:21:29,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2018-09-21 18:21:29,471 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2018-09-21 18:21:29,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:29,471 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2018-09-21 18:21:29,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:21:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2018-09-21 18:21:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:21:29,474 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:29,474 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 18:21:29,475 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:29,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1376969991, now seen corresponding path program 1 times [2018-09-21 18:21:29,476 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:29,476 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:29,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:29,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:29,616 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 18:21:29,625 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 18:21:29,626 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:29,630 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:29,641 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 18:21:29,642 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:29,665 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 18:21:29,672 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 18:21:29,673 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:29,677 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:29,683 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 18:21:29,684 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:29,785 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 18:21:29,785 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:29,801 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:29,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:21:29,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:21:29,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:21:29,803 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:21:29,803 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2018-09-21 18:21:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:44,289 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-09-21 18:21:44,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-21 18:21:44,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-09-21 18:21:44,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:44,368 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:21:44,368 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:21:44,369 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:21:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:21:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-21 18:21:44,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:21:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-09-21 18:21:44,378 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 27 [2018-09-21 18:21:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:44,379 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-09-21 18:21:44,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:21:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-09-21 18:21:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:21:44,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:44,385 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 18:21:44,385 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:44,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1348340840, now seen corresponding path program 1 times [2018-09-21 18:21:44,386 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:44,387 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:44,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:44,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:46,097 INFO L303 Elim1Store]: Index analysis took 1586 ms [2018-09-21 18:21:46,099 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2018-09-21 18:21:48,355 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE (/ 37748947079.0 1000000000000000000.0))) (select v_arrayElimArr_1 (_ bv0 32))) [2018-09-21 18:21:48,356 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:48,359 INFO L303 Elim1Store]: Index analysis took 2258 ms [2018-09-21 18:21:48,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2018-09-21 18:21:50,435 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:52,440 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE (/ 3447321717.0 100000000000000000.0))) (select v_arrayElimArr_2 (_ bv1 32))) [2018-09-21 18:21:52,441 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:54,061 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:54,064 INFO L303 Elim1Store]: Index analysis took 5701 ms [2018-09-21 18:21:54,065 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 76 [2018-09-21 18:21:56,194 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:57,241 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:58,036 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:59,646 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:59,847 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:59,950 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:21:59,953 INFO L303 Elim1Store]: Index analysis took 5884 ms [2018-09-21 18:21:59,954 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 121 [2018-09-21 18:21:59,956 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:10,765 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:16,397 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:20,689 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:31,031 INFO L303 Elim1Store]: Index analysis took 1534 ms [2018-09-21 18:22:31,032 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 34 [2018-09-21 18:22:31,382 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:31,385 INFO L303 Elim1Store]: Index analysis took 351 ms [2018-09-21 18:22:31,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2018-09-21 18:22:32,051 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,189 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,394 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,397 INFO L303 Elim1Store]: Index analysis took 1007 ms [2018-09-21 18:22:32,398 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 76 [2018-09-21 18:22:32,483 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,524 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,543 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,604 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,664 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,687 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:32,689 INFO L303 Elim1Store]: Index analysis took 287 ms [2018-09-21 18:22:32,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 121 [2018-09-21 18:22:32,692 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:32,834 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:32,902 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:32,975 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:33,151 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:33,151 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:70, output treesize:80 [2018-09-21 18:22:33,357 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-09-21 18:22:33,810 WARN L178 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-09-21 18:22:33,839 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:33,845 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:33,855 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:33,860 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:33,866 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:33,878 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:33,882 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 62 [2018-09-21 18:22:33,884 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:34,281 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:34,282 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:34,284 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:34,286 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:34,293 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:34,295 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:22:34,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 64 [2018-09-21 18:22:34,300 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:34,327 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:34,328 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:91, output treesize:23 [2018-09-21 18:22:34,450 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 18:22:34,451 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:22:34,465 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:22:34,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-21 18:22:34,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-21 18:22:34,466 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-21 18:22:34,467 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:22:34,467 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 6 states. [2018-09-21 18:22:41,217 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-09-21 18:22:41,484 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2018-09-21 18:22:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:22:45,354 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2018-09-21 18:22:45,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-21 18:22:45,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-09-21 18:22:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:22:45,360 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:22:45,360 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:22:45,360 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:22:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:22:45,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:22:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:22:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-21 18:22:45,368 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 27 [2018-09-21 18:22:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:22:45,369 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-21 18:22:45,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-21 18:22:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-21 18:22:45,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-21 18:22:45,372 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:22:45,372 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 18:22:45,372 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:22:45,372 INFO L82 PathProgramCache]: Analyzing trace with hash -370068822, now seen corresponding path program 1 times [2018-09-21 18:22:45,373 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:22:45,373 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:22:45,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:22:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:22:45,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:22:45,499 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 18:22:45,504 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 18:22:45,504 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:45,513 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:45,524 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 18:22:45,524 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:22:45,550 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 18:22:45,557 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 18:22:45,558 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:45,561 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:45,564 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 18:22:45,565 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:22:45,736 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 18:22:45,736 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:22:45,752 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:22:45,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:22:45,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:22:45,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:22:45,754 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:22:45,754 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 9 states. [2018-09-21 18:22:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:22:58,309 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-09-21 18:22:58,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:22:58,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-09-21 18:22:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:22:58,388 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:22:58,388 INFO L226 Difference]: Without dead ends: 65 [2018-09-21 18:22:58,389 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:22:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-21 18:22:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-09-21 18:22:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:22:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-21 18:22:58,396 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 28 [2018-09-21 18:22:58,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:22:58,397 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-21 18:22:58,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:22:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-21 18:22:58,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:22:58,398 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:22:58,398 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] [2018-09-21 18:22:58,400 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:22:58,400 INFO L82 PathProgramCache]: Analyzing trace with hash 769793096, now seen corresponding path program 1 times [2018-09-21 18:22:58,401 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:22:58,401 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:22:58,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:22:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:22:59,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:22:59,568 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 18:22:59,572 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 18:22:59,573 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:59,576 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:59,589 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 18:22:59,589 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:22:59,611 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 18:22:59,615 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 18:22:59,615 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:59,618 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:59,621 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 18:22:59,621 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:22:59,751 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 18:22:59,751 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:22:59,780 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:22:59,780 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:22:59,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:22:59,781 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:22:59,781 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:22:59,781 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2018-09-21 18:23:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:23:11,053 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2018-09-21 18:23:11,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:23:11,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-21 18:23:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:23:11,127 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:23:11,128 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:23:11,128 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:23:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:23:11,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:23:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:23:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:23:11,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-09-21 18:23:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:23:11,130 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:23:11,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:23:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:23:11,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:23:11,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:23:11 BoogieIcfgContainer [2018-09-21 18:23:11,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:23:11,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:23:11,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:23:11,137 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:23:11,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:21:14" (3/4) ... [2018-09-21 18:23:11,141 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:23:11,148 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:23:11,148 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:23:11,148 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-09-21 18:23:11,148 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:23:11,148 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure atan_float [2018-09-21 18:23:11,157 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-09-21 18:23:11,157 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-09-21 18:23:11,157 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-21 18:23:11,252 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:23:11,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:23:11,253 INFO L168 Benchmark]: Toolchain (without parser) took 130311.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 34.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:23:11,255 INFO L168 Benchmark]: CDTParser took 0.21 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 18:23:11,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.35 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 937.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:23:11,256 INFO L168 Benchmark]: Boogie Preprocessor took 82.62 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:23:11,256 INFO L168 Benchmark]: RCFGBuilder took 13054.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:23:11,257 INFO L168 Benchmark]: TraceAbstraction took 116582.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -26.8 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:23:11,257 INFO L168 Benchmark]: Witness Printer took 116.04 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:23:11,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 468.35 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 937.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.62 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 13054.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 116582.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 60.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -26.8 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * Witness Printer took 116.04 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. SAFE Result, 116.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 63.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 359 SDtfs, 295 SDslu, 1363 SDs, 0 SdLazy, 473 SolverSat, 22 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 58.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 51.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 149 ConstructedInterpolants, 20 QuantifiedInterpolants, 69385 SizeOfPredicates, 35 NumberOfNonLiveVariables, 488 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...