/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381_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_1381_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 c91754c7d707a58127a2dc4a18babac51d557647 --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_1381_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 c91754c7d707a58127a2dc4a18babac51d557647 --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 18:40:38,251 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:40:38,253 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:40:38,265 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:40:38,265 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:40:38,266 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:40:38,268 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:40:38,269 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:40:38,271 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:40:38,272 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:40:38,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:40:38,273 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:40:38,274 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:40:38,275 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:40:38,277 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:40:38,277 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:40:38,278 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:40:38,280 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:40:38,282 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:40:38,284 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:40:38,285 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:40:38,287 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:40:38,290 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:40:38,290 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:40:38,290 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:40:38,291 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:40:38,293 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:40:38,293 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:40:38,294 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:40:38,295 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:40:38,296 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:40:38,297 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:40:38,297 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:40:38,297 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:40:38,298 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:40:38,299 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:40:38,299 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:40:38,315 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:40:38,315 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:40:38,316 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:40:38,316 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:40:38,317 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:40:38,317 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:40:38,317 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:40:38,317 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:40:38,317 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:40:38,318 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:40:38,318 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:40:38,318 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:40:38,318 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:40:38,318 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:40:38,318 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:40:38,319 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:40:38,319 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:40:38,319 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:40:38,319 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:40:38,319 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:40:38,319 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:40:38,320 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:40:38,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:40:38,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:40:38,320 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:40:38,320 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:40:38,320 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:40:38,321 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:40:38,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:40:38,321 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 -> c91754c7d707a58127a2dc4a18babac51d557647 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:40:38,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:40:38,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:40:38,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:40:38,411 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:40:38,411 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:40:38,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381_true-unreach-call.c [2018-09-21 18:40:38,775 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80a98e32/9bef158bd7374be09b8e7c8849fb92f1/FLAG8af7b4e02 [2018-09-21 18:40:38,935 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:40:38,936 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1381_true-unreach-call.c [2018-09-21 18:40:38,942 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80a98e32/9bef158bd7374be09b8e7c8849fb92f1/FLAG8af7b4e02 [2018-09-21 18:40:38,959 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80a98e32/9bef158bd7374be09b8e7c8849fb92f1 [2018-09-21 18:40:38,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:40:38,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:40:38,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:38,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:40:38,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:40:38,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:38" (1/1) ... [2018-09-21 18:40:38,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f97729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:38, skipping insertion in model container [2018-09-21 18:40:38,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:38" (1/1) ... [2018-09-21 18:40:38,999 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:40:39,279 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:39,299 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:40:39,310 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:39,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39 WrapperNode [2018-09-21 18:40:39,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:39,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:40:39,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:40:39,345 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:40:39,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... [2018-09-21 18:40:39,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:40:39,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:40:39,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:40:39,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:40:39,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:40:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:40:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:40:39,479 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2018-09-21 18:40:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:40:39,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:40:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:40:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:40:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2018-09-21 18:40:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:40:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:40:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:40:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:40:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:40:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:40:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:40:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:40:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:40:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:40:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:40:39,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:40:40,043 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:40:40,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:40 BoogieIcfgContainer [2018-09-21 18:40:40,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:40:40,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:40:40,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:40:40,048 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:40:40,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:40:38" (1/3) ... [2018-09-21 18:40:40,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d884cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:40, skipping insertion in model container [2018-09-21 18:40:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:39" (2/3) ... [2018-09-21 18:40:40,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d884cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:40, skipping insertion in model container [2018-09-21 18:40:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:40" (3/3) ... [2018-09-21 18:40:40,051 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381_true-unreach-call.c [2018-09-21 18:40:40,061 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:40:40,071 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:40:40,113 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:40:40,114 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:40:40,114 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:40:40,115 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:40:40,115 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:40:40,115 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:40:40,115 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:40:40,115 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:40:40,115 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:40:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-09-21 18:40:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:40:40,143 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:40,145 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] [2018-09-21 18:40:40,147 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 321549379, now seen corresponding path program 1 times [2018-09-21 18:40:40,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:40:40,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:40:40,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:40,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:40,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:40,314 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:40,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:40:40,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:40:40,331 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:40:40,332 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:40,335 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-09-21 18:40:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:40,354 INFO L93 Difference]: Finished difference Result 54 states and 53 transitions. [2018-09-21 18:40:40,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:40:40,356 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:40:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:40,371 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:40:40,371 INFO L226 Difference]: Without dead ends: 50 [2018-09-21 18:40:40,374 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-21 18:40:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-21 18:40:40,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-21 18:40:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2018-09-21 18:40:40,417 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 22 [2018-09-21 18:40:40,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:40,418 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2018-09-21 18:40:40,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:40:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2018-09-21 18:40:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-21 18:40:40,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:40,421 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] [2018-09-21 18:40:40,421 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:40,421 INFO L82 PathProgramCache]: Analyzing trace with hash 621785353, now seen corresponding path program 1 times [2018-09-21 18:40:40,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:40:40,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:40:40,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:40,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:40,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:40:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:40:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:40:40,567 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:40:40,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:40:40 BoogieIcfgContainer [2018-09-21 18:40:40,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:40:40,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:40:40,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:40:40,630 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:40:40,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:40" (3/4) ... [2018-09-21 18:40:40,635 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:40:40,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:40:40,637 INFO L168 Benchmark]: Toolchain (without parser) took 1672.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -141.5 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:40,640 INFO L168 Benchmark]: CDTParser took 2.47 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:40,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.28 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:40,641 INFO L168 Benchmark]: Boogie Preprocessor took 68.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:40,642 INFO L168 Benchmark]: RCFGBuilder took 628.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:40,644 INFO L168 Benchmark]: TraceAbstraction took 584.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:40,645 INFO L168 Benchmark]: Witness Printer took 6.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:40,649 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.47 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 375.28 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 628.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 584.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 49]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of bitwiseOr at line 26, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L43] float x = 0.0f / 0.0f; [L44] float y = __VERIFIER_nondet_float(); [L45] CALL, EXPR copysign_float(x, y) VAL [\old(x)=11, \old(y)=10] [L13] __uint32_t ix, iy; VAL [\old(x)=11, \old(y)=10, x=11, y=10] [L15] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=11, \old(y)=10, gf_u={13:0}, x=11, y=10] [L16] FCALL gf_u.value = (x) VAL [\old(x)=11, \old(y)=10, gf_u={13:0}, x=11, y=10] [L17] EXPR, FCALL gf_u.word VAL [\old(x)=11, \old(y)=10, gf_u={13:0}, gf_u.word=7, x=11, y=10] [L17] (ix) = gf_u.word VAL [\old(x)=11, \old(y)=10, gf_u={13:0}, gf_u.word=7, ix=7, x=11, y=10] [L17] FCALL (ix) = gf_u.word VAL [(ix) = gf_u.word=8, \old(x)=11, \old(y)=10, gf_u={13:0}, gf_u.word=7, ix=7, x=11, y=10] [L18] COND FALSE !(0) VAL [\old(x)=11, \old(y)=10, ix=7, x=11, y=10] [L20] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=11, \old(y)=10, gf_u={9:0}, ix=7, x=11, y=10] [L21] FCALL gf_u.value = (y) VAL [\old(x)=11, \old(y)=10, gf_u={9:0}, ix=7, x=11, y=10] [L22] EXPR, FCALL gf_u.word VAL [\old(x)=11, \old(y)=10, gf_u={9:0}, gf_u.word=12, ix=7, x=11, y=10] [L22] (iy) = gf_u.word VAL [\old(x)=11, \old(y)=10, gf_u={9:0}, gf_u.word=12, ix=7, iy=12, x=11, y=10] [L22] FCALL (iy) = gf_u.word VAL [(iy) = gf_u.word=14, \old(x)=11, \old(y)=10, gf_u={9:0}, gf_u.word=12, ix=7, iy=12, x=11, y=10] [L23] COND FALSE !(0) VAL [\old(x)=11, \old(y)=10, ix=7, iy=12, x=11, y=10] [L25] FCALL ieee_float_shape_type sf_u; VAL [\old(x)=11, \old(y)=10, ix=7, iy=12, sf_u={9:0}, x=11, y=10] [L26] FCALL sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) VAL [\old(x)=11, \old(y)=10, ix=7, iy=12, sf_u={9:0}, x=11, y=10] [L27] EXPR, FCALL sf_u.value VAL [\old(x)=11, \old(y)=10, ix=7, iy=12, sf_u={9:0}, sf_u.value=14, x=11, y=10] [L27] (x) = sf_u.value VAL [\old(x)=11, \old(y)=10, ix=7, iy=12, sf_u={9:0}, sf_u.value=14, x=14, y=10] [L27] FCALL (x) = sf_u.value VAL [(x) = sf_u.value=5, \old(x)=11, \old(y)=10, ix=7, iy=12, sf_u={9:0}, sf_u.value=14, x=14, y=10] [L28] COND FALSE !(0) VAL [\old(x)=11, \old(y)=10, ix=7, iy=12, x=14, y=10] [L29] RET return x; VAL [\old(x)=11, \old(y)=10, \result=14, ix=7, iy=12, x=14, y=10] [L45] EXPR copysign_float(x, y) VAL [copysign_float(x, y)=14, x=11, y=10] [L45] float res = copysign_float(x, y); [L48] CALL, EXPR isnan_float(res) VAL [\old(x)=14] [L33] RET return x != x; VAL [\old(x)=14, \result=0, x=14] [L48] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=14, x=11, y=10] [L48] COND TRUE !isnan_float(res) [L49] __VERIFIER_error() VAL [res=14, x=11, y=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 53 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=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:40:43,053 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:40:43,055 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:40:43,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:40:43,067 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:40:43,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:40:43,070 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:40:43,072 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:40:43,074 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:40:43,075 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:40:43,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:40:43,077 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:40:43,078 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:40:43,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:40:43,081 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:40:43,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:40:43,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:40:43,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:40:43,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:40:43,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:40:43,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:40:43,093 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:40:43,095 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:40:43,096 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:40:43,096 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:40:43,097 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:40:43,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:40:43,100 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:40:43,101 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:40:43,102 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:40:43,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:40:43,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:40:43,104 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:40:43,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:40:43,106 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:40:43,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:40:43,107 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:40:43,124 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:40:43,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:40:43,126 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:40:43,126 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:40:43,127 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:40:43,127 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:40:43,127 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:40:43,127 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:40:43,128 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:40:43,128 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:40:43,128 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:40:43,128 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:40:43,129 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:40:43,130 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:40:43,130 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:40:43,130 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:40:43,130 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:40:43,131 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:40:43,131 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:40:43,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:40:43,131 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:40:43,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:40:43,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:40:43,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:40:43,133 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:40:43,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:40:43,133 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:40:43,133 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:40:43,134 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:40:43,134 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:40:43,134 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:40:43,134 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 -> c91754c7d707a58127a2dc4a18babac51d557647 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:40:43,185 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:40:43,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:40:43,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:40:43,204 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:40:43,205 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:40:43,205 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1381_true-unreach-call.c [2018-09-21 18:40:43,587 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b069ac0cc/08a9a1d62f714fdabb1a8250099ea62f/FLAGb4471e77f [2018-09-21 18:40:43,754 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:40:43,755 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1381_true-unreach-call.c [2018-09-21 18:40:43,763 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b069ac0cc/08a9a1d62f714fdabb1a8250099ea62f/FLAGb4471e77f [2018-09-21 18:40:43,791 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b069ac0cc/08a9a1d62f714fdabb1a8250099ea62f [2018-09-21 18:40:43,796 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:40:43,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:40:43,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:43,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:40:43,814 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:40:43,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:43" (1/1) ... [2018-09-21 18:40:43,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee5304a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:43, skipping insertion in model container [2018-09-21 18:40:43,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:40:43" (1/1) ... [2018-09-21 18:40:43,831 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:40:44,061 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:44,082 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:40:44,096 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:40:44,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44 WrapperNode [2018-09-21 18:40:44,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:40:44,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:40:44,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:40:44,129 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:40:44,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... [2018-09-21 18:40:44,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:40:44,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:40:44,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:40:44,181 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:40:44,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:40:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:40:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:40:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2018-09-21 18:40:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:40:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:40:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:40:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:40:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2018-09-21 18:40:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:40:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:40:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:40:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:40:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:40:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:40:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:40:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:40:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:40:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:40:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:40:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:40:44,504 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:44,523 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:44,655 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:44,687 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:40:44,847 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:40:44,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:44 BoogieIcfgContainer [2018-09-21 18:40:44,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:40:44,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:40:44,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:40:44,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:40:44,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:40:43" (1/3) ... [2018-09-21 18:40:44,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316c52f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:44, skipping insertion in model container [2018-09-21 18:40:44,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:40:44" (2/3) ... [2018-09-21 18:40:44,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316c52f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:40:44, skipping insertion in model container [2018-09-21 18:40:44,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:44" (3/3) ... [2018-09-21 18:40:44,856 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381_true-unreach-call.c [2018-09-21 18:40:44,864 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:40:44,872 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:40:44,919 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:40:44,920 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:40:44,920 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:40:44,921 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:40:44,921 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:40:44,921 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:40:44,921 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:40:44,921 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:40:44,921 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:40:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-09-21 18:40:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:40:44,951 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:44,953 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] [2018-09-21 18:40:44,955 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:44,961 INFO L82 PathProgramCache]: Analyzing trace with hash 325628866, now seen corresponding path program 1 times [2018-09-21 18:40:44,966 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:44,967 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:40:44,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:45,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:45,072 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:45,086 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:45,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:40:45,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:40:45,105 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:40:45,106 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:45,108 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2018-09-21 18:40:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:45,128 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2018-09-21 18:40:45,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:40:45,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:40:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:45,139 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:40:45,140 INFO L226 Difference]: Without dead ends: 49 [2018-09-21 18:40:45,142 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:40:45,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-21 18:40:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-21 18:40:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:40:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 48 transitions. [2018-09-21 18:40:45,186 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 48 transitions. Word has length 21 [2018-09-21 18:40:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:45,187 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 48 transitions. [2018-09-21 18:40:45,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:40:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2018-09-21 18:40:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-21 18:40:45,189 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:40:45,189 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] [2018-09-21 18:40:45,189 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:40:45,190 INFO L82 PathProgramCache]: Analyzing trace with hash 477325184, now seen corresponding path program 1 times [2018-09-21 18:40:45,191 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:40:45,191 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:40:45,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:40:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:40:45,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:40:45,409 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:40:45,421 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:40:45,422 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,450 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,486 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,486 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:40:45,524 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:40:45,530 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:40:45,531 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,535 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,557 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,557 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:40:45,807 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 17 treesize of output 14 [2018-09-21 18:40:45,823 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 14 treesize of output 13 [2018-09-21 18:40:45,823 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,828 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:45,844 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:40:45,844 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2018-09-21 18:40:45,997 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 35 treesize of output 27 [2018-09-21 18:40:46,011 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 27 treesize of output 27 [2018-09-21 18:40:46,012 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:40:46,041 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:40:46,121 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:40:46,122 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:44, output treesize:37 [2018-09-21 18:40:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:40:47,109 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:40:47,124 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:40:47,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-21 18:40:47,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-21 18:40:47,127 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-21 18:40:47,127 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:40:47,128 INFO L87 Difference]: Start difference. First operand 49 states and 48 transitions. Second operand 15 states. [2018-09-21 18:40:47,587 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-09-21 18:40:49,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:40:49,299 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2018-09-21 18:40:49,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-21 18:40:49,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2018-09-21 18:40:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:40:49,301 INFO L225 Difference]: With dead ends: 47 [2018-09-21 18:40:49,301 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:40:49,303 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2018-09-21 18:40:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:40:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:40:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:40:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:40:49,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-09-21 18:40:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:40:49,305 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:40:49,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-21 18:40:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:40:49,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:40:49,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:40:49 BoogieIcfgContainer [2018-09-21 18:40:49,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:40:49,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:40:49,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:40:49,312 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:40:49,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:40:44" (3/4) ... [2018-09-21 18:40:49,317 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:40:49,325 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:40:49,326 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:40:49,326 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure copysign_float [2018-09-21 18:40:49,326 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:40:49,332 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-09-21 18:40:49,332 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-21 18:40:49,333 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:40:49,389 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:40:49,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:40:49,390 INFO L168 Benchmark]: Toolchain (without parser) took 5592.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 954.6 MB in the beginning and 965.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 144.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:49,392 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:49,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.97 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:49,393 INFO L168 Benchmark]: Boogie Preprocessor took 51.22 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:40:49,393 INFO L168 Benchmark]: RCFGBuilder took 667.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:49,394 INFO L168 Benchmark]: TraceAbstraction took 4462.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.0 MB in the end (delta: 152.2 MB). Peak memory consumption was 152.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:49,395 INFO L168 Benchmark]: Witness Printer took 77.40 ms. Allocated memory is still 1.2 GB. Free memory was 972.0 MB in the beginning and 965.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:40:49,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 322.97 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.22 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 667.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4462.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 972.0 MB in the end (delta: 152.2 MB). Peak memory consumption was 152.2 MB. Max. memory is 11.5 GB. * Witness Printer took 77.40 ms. Allocated memory is still 1.2 GB. Free memory was 972.0 MB in the beginning and 965.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: 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 5 procedures, 53 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 58 SDslu, 336 SDs, 0 SdLazy, 151 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 67 ConstructedInterpolants, 12 QuantifiedInterpolants, 33488 SizeOfPredicates, 15 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...