/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620a_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_0620a_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 bc7b929d20445456da87d92c4566355380c50982 --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_0620a_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 bc7b929d20445456da87d92c4566355380c50982 --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 18:20:36,348 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:20:36,350 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:20:36,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:20:36,366 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:20:36,367 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:20:36,368 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:20:36,370 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:20:36,372 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:20:36,373 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:20:36,374 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:20:36,374 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:20:36,375 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:20:36,377 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:20:36,378 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:20:36,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:20:36,380 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:20:36,382 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:20:36,384 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:20:36,386 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:20:36,387 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:20:36,388 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:20:36,391 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:20:36,392 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:20:36,392 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:20:36,393 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:20:36,394 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:20:36,395 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:20:36,396 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:20:36,397 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:20:36,398 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:20:36,399 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:20:36,399 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:20:36,399 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:20:36,400 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:20:36,401 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:20:36,401 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:20:36,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:20:36,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:20:36,425 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:20:36,425 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:20:36,426 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:20:36,426 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:20:36,427 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:20:36,427 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:20:36,427 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:20:36,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:20:36,427 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:20:36,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:20:36,428 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:20:36,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:20:36,428 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:20:36,428 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:20:36,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:20:36,429 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:20:36,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:20:36,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:20:36,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:20:36,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:20:36,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:36,430 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:20:36,430 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:20:36,430 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:20:36,430 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:20:36,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:20:36,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:20:36,431 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 -> bc7b929d20445456da87d92c4566355380c50982 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 18:20:36,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:20:36,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:20:36,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:20:36,508 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:20:36,509 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:20:36,510 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-09-21 18:20:36,879 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ae2e03b/462a0e65b55e44378f5dd5f214ffcbf1/FLAG4f249b2ee [2018-09-21 18:20:37,143 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:20:37,144 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-09-21 18:20:37,158 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ae2e03b/462a0e65b55e44378f5dd5f214ffcbf1/FLAG4f249b2ee [2018-09-21 18:20:37,182 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95ae2e03b/462a0e65b55e44378f5dd5f214ffcbf1 [2018-09-21 18:20:37,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:20:37,192 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:20:37,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:37,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:20:37,205 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:20:37,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69759c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37, skipping insertion in model container [2018-09-21 18:20:37,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,224 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:20:37,483 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:37,511 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:20:37,555 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:37,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37 WrapperNode [2018-09-21 18:20:37,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:37,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:20:37,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:20:37,593 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:20:37,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (1/1) ... [2018-09-21 18:20:37,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:20:37,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:20:37,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:20:37,680 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:20:37,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (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 18:20:37,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:20:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:20:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:20:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-09-21 18:20:37,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:20:37,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:20:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:20:37,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:20:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:20:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:20:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:20:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:20:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:20:37,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:20:37,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:20:37,877 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-09-21 18:20:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:20:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:20:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:20:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:20:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:20:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:20:38,850 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:20:38,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:38 BoogieIcfgContainer [2018-09-21 18:20:38,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:20:38,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:20:38,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:20:38,856 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:20:38,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:20:37" (1/3) ... [2018-09-21 18:20:38,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e28e501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:38, skipping insertion in model container [2018-09-21 18:20:38,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:37" (2/3) ... [2018-09-21 18:20:38,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e28e501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:38, skipping insertion in model container [2018-09-21 18:20:38,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:38" (3/3) ... [2018-09-21 18:20:38,860 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a_true-unreach-call.c [2018-09-21 18:20:38,871 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:20:38,881 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:20:38,929 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:20:38,929 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:20:38,930 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:20:38,930 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:20:38,930 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:20:38,930 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:20:38,930 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:20:38,931 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:20:38,931 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:20:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2018-09-21 18:20:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:20:38,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:38,963 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:38,969 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1255556425, now seen corresponding path program 1 times [2018-09-21 18:20:38,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:20:38,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:20:39,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:39,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:39,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:39,165 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 18:20:39,167 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:39,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:20:39,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:20:39,184 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:20:39,185 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:20:39,188 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 2 states. [2018-09-21 18:20:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:20:39,212 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2018-09-21 18:20:39,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:20:39,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:20:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:20:39,229 INFO L225 Difference]: With dead ends: 86 [2018-09-21 18:20:39,229 INFO L226 Difference]: Without dead ends: 82 [2018-09-21 18:20:39,231 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 18:20:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-21 18:20:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-21 18:20:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-21 18:20:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2018-09-21 18:20:39,281 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 18 [2018-09-21 18:20:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:20:39,281 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2018-09-21 18:20:39,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:20:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2018-09-21 18:20:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:20:39,283 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:39,284 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 18:20:39,285 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash -95415276, now seen corresponding path program 1 times [2018-09-21 18:20:39,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:20:39,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:20:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:39,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:20:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:20:39,451 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:20:39,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:20:39 BoogieIcfgContainer [2018-09-21 18:20:39,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:20:39,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:20:39,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:20:39,496 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:20:39,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:38" (3/4) ... [2018-09-21 18:20:39,500 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:20:39,501 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:20:39,501 INFO L168 Benchmark]: Toolchain (without parser) took 2312.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -122.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:39,504 INFO L168 Benchmark]: CDTParser took 0.16 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 18:20:39,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.99 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:39,505 INFO L168 Benchmark]: Boogie Preprocessor took 82.64 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:39,505 INFO L168 Benchmark]: RCFGBuilder took 1171.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:39,506 INFO L168 Benchmark]: TraceAbstraction took 642.92 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: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:39,507 INFO L168 Benchmark]: Witness Printer took 5.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:39,513 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 397.99 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.64 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1171.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -166.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 642.92 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: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 142]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 141, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 62, overapproximation of someBinaryArithmeticFLOAToperation at line 65. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L43-L47] 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, }; [L49-L51] 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)=6442450957, \old(huge_floor)=6442450953, \old(one_atan)=6442450945, \old(pi)=6442450954, \old(pi_o_2)=6442450946, \old(pi_o_4)=6442450950, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L137] float x = 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, x=0] [L138] CALL, EXPR atan_float(x) VAL [\old(x)=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; VAL [\old(x)=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L58] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={6442450949:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L59] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={6442450949:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L60] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={6442450949:0}, gf_u.word=6442450944, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L60] (hx) = gf_u.word VAL [\old(x)=0, gf_u={6442450949:0}, gf_u.word=6442450944, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L60] FCALL (hx) = gf_u.word VAL [(hx) = gf_u.word=6442450951, \old(x)=0, gf_u={6442450949:0}, gf_u.word=6442450944, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L61] COND FALSE !(0) VAL [\old(x)=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L62] ix = hx & 0x7fffffff VAL [\old(x)=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L63] COND TRUE ix >= 0x50800000 VAL [\old(x)=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L64] COND TRUE ((ix) > 0x7f800000L) [L65] RET return x + x; VAL [\old(x)=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=-2147483648, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L138] EXPR atan_float(x) VAL [atan_float(x)=6442450952, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=0] [L138] float res = atan_float(x); [L141] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=6442450952, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L141] COND FALSE, EXPR !(res == 0.0f && __signbit_float(res) == 0) VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=6442450952, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L141] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L142] __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=6442450952, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 86 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 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=86occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 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 18:20:41,974 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:20:41,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:20:41,994 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:20:41,994 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:20:41,995 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:20:41,996 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:20:41,998 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:20:42,000 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:20:42,002 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:20:42,004 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:20:42,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:20:42,011 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:20:42,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:20:42,015 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:20:42,016 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:20:42,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:20:42,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:20:42,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:20:42,025 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:20:42,026 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:20:42,027 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:20:42,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:20:42,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:20:42,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:20:42,031 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:20:42,032 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:20:42,033 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:20:42,034 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:20:42,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:20:42,036 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:20:42,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:20:42,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:20:42,037 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:20:42,038 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:20:42,039 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:20:42,039 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:20:42,061 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:20:42,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:20:42,062 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:20:42,063 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:20:42,063 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:20:42,064 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:20:42,064 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:20:42,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:20:42,064 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:20:42,065 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:20:42,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:20:42,065 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:20:42,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:20:42,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:20:42,066 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:20:42,066 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:20:42,066 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:20:42,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:20:42,067 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:20:42,067 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:20:42,067 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:20:42,067 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:20:42,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:20:42,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:42,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:20:42,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:20:42,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:20:42,070 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:20:42,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:20:42,070 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:20:42,071 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:20:42,072 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 -> bc7b929d20445456da87d92c4566355380c50982 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 18:20:42,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:20:42,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:20:42,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:20:42,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:20:42,145 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:20:42,146 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-09-21 18:20:42,545 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2225c9890/a93c571939c34bdda1101be61317fb97/FLAG9c21a925b [2018-09-21 18:20:42,741 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:20:42,742 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0620a_true-unreach-call.c [2018-09-21 18:20:42,751 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2225c9890/a93c571939c34bdda1101be61317fb97/FLAG9c21a925b [2018-09-21 18:20:42,767 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2225c9890/a93c571939c34bdda1101be61317fb97 [2018-09-21 18:20:42,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:20:42,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:20:42,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:42,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:20:42,784 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:20:42,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:42" (1/1) ... [2018-09-21 18:20:42,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa29c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:42, skipping insertion in model container [2018-09-21 18:20:42,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:42" (1/1) ... [2018-09-21 18:20:42,802 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:20:43,053 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:43,099 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:20:43,158 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:43,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43 WrapperNode [2018-09-21 18:20:43,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:43,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:20:43,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:20:43,239 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:20:43,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (1/1) ... [2018-09-21 18:20:43,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:20:43,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:20:43,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:20:43,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:20:43,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (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 18:20:43,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:20:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:20:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:20:43,522 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-09-21 18:20:43,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-21 18:20:43,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:20:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:20:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:20:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:20:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:20:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:20:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:20:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:20:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:20:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:20:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-09-21 18:20:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-21 18:20:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:20:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:20:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:20:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:20:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:20:45,950 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:45,967 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:48,459 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:50,655 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:55,230 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:55,241 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:55,244 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:20:55,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:55 BoogieIcfgContainer [2018-09-21 18:20:55,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:20:55,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:20:55,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:20:55,250 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:20:55,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:20:42" (1/3) ... [2018-09-21 18:20:55,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c35154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:55, skipping insertion in model container [2018-09-21 18:20:55,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:43" (2/3) ... [2018-09-21 18:20:55,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c35154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:55, skipping insertion in model container [2018-09-21 18:20:55,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:55" (3/3) ... [2018-09-21 18:20:55,256 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620a_true-unreach-call.c [2018-09-21 18:20:55,264 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:20:55,272 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:20:55,313 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:20:55,313 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:20:55,314 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:20:55,314 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:20:55,314 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:20:55,314 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:20:55,314 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:20:55,314 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:20:55,315 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:20:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2018-09-21 18:20:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-21 18:20:55,358 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:55,360 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:55,363 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:55,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1255556425, now seen corresponding path program 1 times [2018-09-21 18:20:55,374 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:20:55,374 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 18:20:55,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:55,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:20:55,546 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 18:20:55,548 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:20:55,570 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:55,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:20:55,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:20:55,595 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:20:55,596 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:20:55,600 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 2 states. [2018-09-21 18:20:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:20:55,639 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2018-09-21 18:20:55,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:20:55,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-09-21 18:20:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:20:55,659 INFO L225 Difference]: With dead ends: 86 [2018-09-21 18:20:55,662 INFO L226 Difference]: Without dead ends: 82 [2018-09-21 18:20:55,665 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 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 18:20:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-21 18:20:55,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-21 18:20:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-21 18:20:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2018-09-21 18:20:55,731 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 18 [2018-09-21 18:20:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:20:55,732 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2018-09-21 18:20:55,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:20:55,733 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2018-09-21 18:20:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:20:55,734 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:55,734 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 18:20:55,738 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:55,738 INFO L82 PathProgramCache]: Analyzing trace with hash -95415276, now seen corresponding path program 1 times [2018-09-21 18:20:55,740 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:20:55,742 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 18:20:55,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:55,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:20:55,946 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 18:20:55,954 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 18:20:55,954 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:20:55,959 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,037 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 18:20:56,037 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:20:56,181 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 18:20:56,202 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 18:20:56,204 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,228 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,257 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 18:20:56,257 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:20:56,583 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 18:20:56,583 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:20:56,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:56,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:20:56,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:20:56,601 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:20:56,601 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:20:56,601 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 9 states. [2018-09-21 18:20:57,610 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-21 18:21:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:11,247 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2018-09-21 18:21:11,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:21:11,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-09-21 18:21:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:11,318 INFO L225 Difference]: With dead ends: 88 [2018-09-21 18:21:11,318 INFO L226 Difference]: Without dead ends: 84 [2018-09-21 18:21:11,320 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:21:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-21 18:21:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2018-09-21 18:21:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-09-21 18:21:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2018-09-21 18:21:11,339 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 27 [2018-09-21 18:21:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:11,340 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2018-09-21 18:21:11,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:21:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2018-09-21 18:21:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-21 18:21:11,342 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:11,343 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] [2018-09-21 18:21:11,343 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:11,343 INFO L82 PathProgramCache]: Analyzing trace with hash -30906409, now seen corresponding path program 1 times [2018-09-21 18:21:11,344 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:11,345 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:21:11,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:11,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:11,615 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 18:21:11,615 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:11,630 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:11,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-21 18:21:11,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-21 18:21:11,631 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-21 18:21:11,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-21 18:21:11,633 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 7 states. [2018-09-21 18:21:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:21,136 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-09-21 18:21:21,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-21 18:21:21,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-09-21 18:21:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:21,198 INFO L225 Difference]: With dead ends: 85 [2018-09-21 18:21:21,198 INFO L226 Difference]: Without dead ends: 85 [2018-09-21 18:21:21,199 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:21:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-21 18:21:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2018-09-21 18:21:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-21 18:21:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2018-09-21 18:21:21,210 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 29 [2018-09-21 18:21:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:21,212 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2018-09-21 18:21:21,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-21 18:21:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2018-09-21 18:21:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:21:21,213 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:21,213 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:21:21,214 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1632961735, now seen corresponding path program 1 times [2018-09-21 18:21:21,214 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:21,214 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 18:21:21,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:22,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:22,367 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 18:21:22,371 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 18:21:22,372 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:22,378 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:22,392 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 18:21:22,392 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:22,428 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 18:21:22,432 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 18:21:22,433 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:22,437 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:22,440 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 18:21:22,441 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:22,667 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 18:21:22,667 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:22,700 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:22,701 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:21:22,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:21:22,701 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:21:22,702 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:21:22,702 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 9 states. [2018-09-21 18:21:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:37,982 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2018-09-21 18:21:38,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:21:38,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-09-21 18:21:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:38,049 INFO L225 Difference]: With dead ends: 93 [2018-09-21 18:21:38,049 INFO L226 Difference]: Without dead ends: 84 [2018-09-21 18:21:38,050 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:21:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-21 18:21:38,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2018-09-21 18:21:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-21 18:21:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-09-21 18:21:38,057 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 31 [2018-09-21 18:21:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:38,058 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-09-21 18:21:38,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:21:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-09-21 18:21:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-21 18:21:38,060 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:38,060 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:21:38,061 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:38,062 INFO L82 PathProgramCache]: Analyzing trace with hash -205916862, now seen corresponding path program 1 times [2018-09-21 18:21:38,062 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:38,062 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 18:21:38,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:39,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:40,576 WARN L178 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-21 18:21:40,595 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 18:21:40,595 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:40,623 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:40,624 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-21 18:21:40,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-21 18:21:40,624 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-21 18:21:40,624 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:21:40,625 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 6 states. [2018-09-21 18:21:48,837 WARN L178 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-21 18:21:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:58,146 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-09-21 18:21:58,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-21 18:21:58,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-09-21 18:21:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:58,222 INFO L225 Difference]: With dead ends: 89 [2018-09-21 18:21:58,222 INFO L226 Difference]: Without dead ends: 82 [2018-09-21 18:21:58,223 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-21 18:21:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-21 18:21:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-21 18:21:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-21 18:21:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2018-09-21 18:21:58,230 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 32 [2018-09-21 18:21:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:58,231 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2018-09-21 18:21:58,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-21 18:21:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2018-09-21 18:21:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-21 18:21:58,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:58,235 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:21:58,235 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash -193573384, now seen corresponding path program 1 times [2018-09-21 18:21:58,236 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:58,236 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 18:21:58,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:58,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:58,487 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 18:21:58,491 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 18:21:58,491 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:58,496 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:58,509 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 18:21:58,509 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:58,552 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 18:21:58,555 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 18:21:58,555 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:58,560 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:58,564 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 18:21:58,564 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:58,816 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 18:21:58,816 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:58,827 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:58,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-21 18:21:58,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-21 18:21:58,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-21 18:21:58,828 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-09-21 18:21:58,829 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 14 states. [2018-09-21 18:22:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:22:05,030 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2018-09-21 18:22:05,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:22:05,031 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2018-09-21 18:22:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:22:05,034 INFO L225 Difference]: With dead ends: 85 [2018-09-21 18:22:05,034 INFO L226 Difference]: Without dead ends: 76 [2018-09-21 18:22:05,035 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2018-09-21 18:22:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-21 18:22:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-09-21 18:22:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-09-21 18:22:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-09-21 18:22:05,044 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 45 [2018-09-21 18:22:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:22:05,045 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-09-21 18:22:05,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-21 18:22:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-09-21 18:22:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-21 18:22:05,048 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:22:05,049 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:22:05,049 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:22:05,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1794013578, now seen corresponding path program 1 times [2018-09-21 18:22:05,050 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:22:05,050 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:22:05,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:22:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:22:06,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:22:06,500 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 18:22:06,506 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 18:22:06,506 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:06,510 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:06,522 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 18:22:06,523 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:22:06,564 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 18:22:06,582 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 18:22:06,582 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:22:06,612 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:22:06,628 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 18:22:06,628 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:22:06,817 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 18:22:06,817 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:22:06,854 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:22:06,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:22:06,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:22:06,855 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:22:06,855 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:22:06,855 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 9 states. [2018-09-21 18:22:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:22:13,423 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-09-21 18:22:13,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:22:13,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2018-09-21 18:22:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:22:13,425 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:22:13,425 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:22:13,426 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 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 18:22:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:22:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:22:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:22:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:22:13,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2018-09-21 18:22:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:22:13,427 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:22:13,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:22:13,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:22:13,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:22:13,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:22:13 BoogieIcfgContainer [2018-09-21 18:22:13,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:22:13,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:22:13,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:22:13,433 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:22:13,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:55" (3/4) ... [2018-09-21 18:22:13,438 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:22:13,444 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:22:13,445 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-09-21 18:22:13,445 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:22:13,445 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure atan_float [2018-09-21 18:22:13,445 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-09-21 18:22:13,452 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2018-09-21 18:22:13,453 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-09-21 18:22:13,453 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-21 18:22:13,544 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:22:13,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:22:13,545 INFO L168 Benchmark]: Toolchain (without parser) took 90773.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:22:13,547 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 18:22:13,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.82 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:22:13,549 INFO L168 Benchmark]: Boogie Preprocessor took 108.20 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 18:22:13,549 INFO L168 Benchmark]: RCFGBuilder took 11900.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -144.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:22:13,550 INFO L168 Benchmark]: TraceAbstraction took 78186.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.2 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:22:13,551 INFO L168 Benchmark]: Witness Printer took 111.84 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 18:22:13,555 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 459.82 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 108.20 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 11900.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -144.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 78186.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.2 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. * Witness Printer took 111.84 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: 142]: 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, 86 locations, 1 error locations. SAFE Result, 78.1s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 70.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 505 SDtfs, 307 SDslu, 2397 SDs, 0 SdLazy, 595 SolverSat, 36 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 63.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 271 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred 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, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 232 ConstructedInterpolants, 24 QuantifiedInterpolants, 56497 SizeOfPredicates, 41 NumberOfNonLiveVariables, 671 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...