/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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_1232b_false-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 36a0a55241cede481b157c1ab9f348d708a5b166 ................................................................................................................................................................................................................................................................................................................................................................................ 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_1232b_false-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 36a0a55241cede481b157c1ab9f348d708a5b166 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:33:18,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:33:18,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:33:18,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:33:18,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:33:18,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:33:18,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:33:18,216 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:33:18,220 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:33:18,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:33:18,222 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:33:18,222 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:33:18,225 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:33:18,226 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:33:18,227 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:33:18,228 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:33:18,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:33:18,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:33:18,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:33:18,238 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:33:18,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:33:18,249 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:33:18,255 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:33:18,256 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:33:18,256 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:33:18,259 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:33:18,261 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:33:18,265 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:33:18,266 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:33:18,267 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:33:18,267 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:33:18,270 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:33:18,270 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:33:18,270 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:33:18,271 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:33:18,272 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:33:18,272 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:33:18,290 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:33:18,291 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:33:18,292 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:33:18,292 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:33:18,293 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:33:18,293 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:33:18,293 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:33:18,293 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:33:18,293 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:33:18,294 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:33:18,294 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:33:18,294 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:33:18,294 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:33:18,294 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:33:18,296 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:33:18,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:33:18,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:33:18,296 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:33:18,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:33:18,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:33:18,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:33:18,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:33:18,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:33:18,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:33:18,299 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:33:18,299 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:33:18,299 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:33:18,299 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:33:18,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:33:18,300 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-09-20 15:33:18,368 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:33:18,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:33:18,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:33:18,398 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:33:18,399 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:33:18,400 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-20 15:33:18,751 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb27796c9/e7d1c7a355bb45b5b480060286ff9b8e/FLAGb9c16b97f [2018-09-20 15:33:18,900 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:33:18,901 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-20 15:33:18,909 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb27796c9/e7d1c7a355bb45b5b480060286ff9b8e/FLAGb9c16b97f [2018-09-20 15:33:18,931 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb27796c9/e7d1c7a355bb45b5b480060286ff9b8e [2018-09-20 15:33:18,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:33:18,938 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:33:18,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:18,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:33:18,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:33:18,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:18" (1/1) ... [2018-09-20 15:33:18,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294241e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:18, skipping insertion in model container [2018-09-20 15:33:18,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:18" (1/1) ... [2018-09-20 15:33:18,964 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:33:19,240 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:19,260 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:33:19,283 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:19,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19 WrapperNode [2018-09-20 15:33:19,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:19,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:33:19,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:33:19,331 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:33:19,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (1/1) ... [2018-09-20 15:33:19,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:33:19,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:33:19,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:33:19,410 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:33:19,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (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 [2018-09-20 15:33:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:33:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:33:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:33:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-20 15:33:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:33:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:33:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:33:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:33:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:33:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:33:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:33:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:33:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:33:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-20 15:33:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:33:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:33:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:33:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:33:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:33:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:33:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:33:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:33:20,182 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:33:20,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:20 BoogieIcfgContainer [2018-09-20 15:33:20,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:33:20,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:33:20,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:33:20,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:33:20,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:33:18" (1/3) ... [2018-09-20 15:33:20,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff40744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:20, skipping insertion in model container [2018-09-20 15:33:20,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:19" (2/3) ... [2018-09-20 15:33:20,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff40744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:20, skipping insertion in model container [2018-09-20 15:33:20,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:20" (3/3) ... [2018-09-20 15:33:20,192 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-09-20 15:33:20,205 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:33:20,215 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:33:20,272 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:33:20,273 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:33:20,273 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:33:20,273 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:33:20,273 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:33:20,273 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:33:20,274 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:33:20,274 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:33:20,274 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:33:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-09-20 15:33:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-20 15:33:20,307 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:20,309 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] [2018-09-20 15:33:20,312 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 969493283, now seen corresponding path program 1 times [2018-09-20 15:33:20,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:20,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:20,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:20,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:20,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:20,495 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:20,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:33:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:33:20,518 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:33:20,518 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:33:20,522 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-09-20 15:33:20,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:20,561 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-09-20 15:33:20,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:33:20,564 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-20 15:33:20,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:20,580 INFO L225 Difference]: With dead ends: 111 [2018-09-20 15:33:20,581 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:33:20,587 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 [2018-09-20 15:33:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:33:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:33:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:33:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-09-20 15:33:20,658 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-09-20 15:33:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:20,659 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-09-20 15:33:20,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:33:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-09-20 15:33:20,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:33:20,662 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:20,662 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] [2018-09-20 15:33:20,663 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash -228670553, now seen corresponding path program 1 times [2018-09-20 15:33:20,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:20,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:20,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:20,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:20,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:20,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:20,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:20,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:20,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:20,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:20,862 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-09-20 15:33:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:20,966 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-09-20 15:33:20,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:20,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-09-20 15:33:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:20,971 INFO L225 Difference]: With dead ends: 83 [2018-09-20 15:33:20,972 INFO L226 Difference]: Without dead ends: 60 [2018-09-20 15:33:20,973 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-20 15:33:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-20 15:33:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:33:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-20 15:33:20,988 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-09-20 15:33:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:20,989 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-20 15:33:20,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-20 15:33:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:33:20,991 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:20,992 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] [2018-09-20 15:33:20,992 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:20,992 INFO L82 PathProgramCache]: Analyzing trace with hash 738637230, now seen corresponding path program 1 times [2018-09-20 15:33:20,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:20,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:20,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:20,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:20,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:21,112 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:21,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:21,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:21,113 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:21,113 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:21,114 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-09-20 15:33:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:21,195 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-09-20 15:33:21,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:21,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-20 15:33:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:21,198 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:33:21,198 INFO L226 Difference]: Without dead ends: 64 [2018-09-20 15:33:21,199 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:21,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-20 15:33:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-09-20 15:33:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:33:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-09-20 15:33:21,212 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-09-20 15:33:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:21,213 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-09-20 15:33:21,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-09-20 15:33:21,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:33:21,214 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:21,214 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] [2018-09-20 15:33:21,216 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:21,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1058314129, now seen corresponding path program 1 times [2018-09-20 15:33:21,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:33:21,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:33:21,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:21,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:21,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:33:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:21,330 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:33:21,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:33:21 BoogieIcfgContainer [2018-09-20 15:33:21,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:33:21,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:33:21,368 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:33:21,368 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:33:21,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:20" (3/4) ... [2018-09-20 15:33:21,374 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:33:21,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:33:21,376 INFO L168 Benchmark]: Toolchain (without parser) took 2439.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -105.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:21,378 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. [2018-09-20 15:33:21,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.47 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:21,379 INFO L168 Benchmark]: Boogie Preprocessor took 78.70 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:21,381 INFO L168 Benchmark]: RCFGBuilder took 773.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:21,382 INFO L168 Benchmark]: TraceAbstraction took 1182.98 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: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:21,384 INFO L168 Benchmark]: Witness Printer took 6.91 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. [2018-09-20 15:33:21,389 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 390.47 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.70 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 773.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -163.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1182.98 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: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.91 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L13] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L17] FCALL gf_u.value = (x) VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, x=2139095043] [L18] (w) = gf_u.word VAL [\old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=2139095043] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=2139095044, \old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=2139095043] [L19] COND FALSE !(0) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=0, __fpclassify_float(x)=0, x=2139095043, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=2139095043, \old(y)=0, \result=0, x=2139095043, y=0] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=2139095043, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095043, y=0] [L69] COND FALSE, EXPR !(res == -0.0f && __signbit_float(res) == 1) VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095043, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=2139095043, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.23-40ef509 [2018-09-20 15:33:23,853 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-09-20 15:33:23,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:33:23,869 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:33:23,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:33:23,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:33:23,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:33:23,876 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:33:23,877 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:33:23,877 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:33:23,878 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:33:23,879 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:33:23,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:33:23,881 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:33:23,883 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:33:23,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:33:23,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:33:23,889 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:33:23,890 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:33:23,892 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:33:23,894 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:33:23,895 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:33:23,895 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:33:23,896 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:33:23,898 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:33:23,899 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:33:23,899 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:33:23,901 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:33:23,901 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:33:23,902 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:33:23,902 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:33:23,903 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:33:23,904 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:33:23,904 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:33:23,905 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:33:23,921 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:33:23,921 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:33:23,922 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:33:23,922 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:33:23,923 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:33:23,924 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:33:23,924 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:33:23,924 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:33:23,924 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:33:23,924 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:33:23,924 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:33:23,925 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:33:23,925 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:33:23,925 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:33:23,925 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:33:23,927 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:33:23,927 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:33:23,927 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:33:23,927 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:33:23,927 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:33:23,928 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:33:23,928 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:33:23,928 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:33:23,928 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:33:23,928 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:33:23,929 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:33:23,930 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:33:23,930 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:33:23,930 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:33:23,930 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:33:23,930 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:33:23,930 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-09-20 15:33:23,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:33:23,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:33:23,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:33:24,000 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:33:24,001 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:33:24,002 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-20 15:33:24,357 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e2b79ec/d70e4e465fcb4abfa6a2592eee3bd982/FLAG184c654f1 [2018-09-20 15:33:24,547 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:33:24,550 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-09-20 15:33:24,559 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e2b79ec/d70e4e465fcb4abfa6a2592eee3bd982/FLAG184c654f1 [2018-09-20 15:33:24,586 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e2b79ec/d70e4e465fcb4abfa6a2592eee3bd982 [2018-09-20 15:33:24,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:33:24,599 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:33:24,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:24,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:33:24,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:33:24,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:24,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223424f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24, skipping insertion in model container [2018-09-20 15:33:24,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:24,630 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:33:24,885 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:24,909 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:33:24,936 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:33:24,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24 WrapperNode [2018-09-20 15:33:24,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:33:24,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:33:24,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:33:24,994 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:33:25,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (1/1) ... [2018-09-20 15:33:25,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:33:25,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:33:25,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:33:25,075 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:33:25,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (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 [2018-09-20 15:33:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:33:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:33:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-20 15:33:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-09-20 15:33:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-09-20 15:33:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:33:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:33:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 15:33:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-20 15:33:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:33:25,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:33:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:33:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:33:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-09-20 15:33:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-09-20 15:33:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:33:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:33:25,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:33:25,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:33:25,709 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:25,763 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:25,889 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:25,899 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:33:25,910 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:33:25,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:25 BoogieIcfgContainer [2018-09-20 15:33:25,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:33:25,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:33:25,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:33:25,917 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:33:25,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:33:24" (1/3) ... [2018-09-20 15:33:25,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe10b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:25, skipping insertion in model container [2018-09-20 15:33:25,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:33:24" (2/3) ... [2018-09-20 15:33:25,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe10b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:33:25, skipping insertion in model container [2018-09-20 15:33:25,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:25" (3/3) ... [2018-09-20 15:33:25,922 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-09-20 15:33:25,933 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:33:25,943 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:33:26,000 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:33:26,001 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:33:26,001 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:33:26,001 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:33:26,003 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:33:26,003 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:33:26,003 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:33:26,003 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:33:26,003 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:33:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-09-20 15:33:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-20 15:33:26,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:26,053 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] [2018-09-20 15:33:26,060 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:26,067 INFO L82 PathProgramCache]: Analyzing trace with hash 430535463, now seen corresponding path program 1 times [2018-09-20 15:33:26,073 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:26,074 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 [2018-09-20 15:33:26,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:26,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:26,186 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:26,202 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:26,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:33:26,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:33:26,218 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:33:26,219 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:33:26,222 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-09-20 15:33:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:26,252 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-09-20 15:33:26,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:33:26,254 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-20 15:33:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:26,265 INFO L225 Difference]: With dead ends: 107 [2018-09-20 15:33:26,265 INFO L226 Difference]: Without dead ends: 54 [2018-09-20 15:33:26,270 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 [2018-09-20 15:33:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-20 15:33:26,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-20 15:33:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-20 15:33:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-09-20 15:33:26,330 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-09-20 15:33:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:26,330 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-09-20 15:33:26,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:33:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-09-20 15:33:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-20 15:33:26,334 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:26,334 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:26,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash 973147503, now seen corresponding path program 1 times [2018-09-20 15:33:26,336 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:26,336 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 [2018-09-20 15:33:26,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:26,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:26,462 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:26,479 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:26,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:26,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:26,481 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:26,481 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:26,485 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-09-20 15:33:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:26,601 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-09-20 15:33:26,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:26,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-20 15:33:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:26,606 INFO L225 Difference]: With dead ends: 80 [2018-09-20 15:33:26,606 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:33:26,608 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:33:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:33:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:33:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-09-20 15:33:26,621 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-09-20 15:33:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:26,622 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-09-20 15:33:26,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-09-20 15:33:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:33:26,623 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:26,624 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:26,625 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:26,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1744180640, now seen corresponding path program 1 times [2018-09-20 15:33:26,626 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:26,626 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) [2018-09-20 15:33:26,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:33:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:26,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:26,858 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 [2018-09-20 15:33:26,880 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 [2018-09-20 15:33:26,880 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:26,907 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:26,989 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:26,990 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:33:27,038 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 [2018-09-20 15:33:27,055 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 [2018-09-20 15:33:27,055 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:27,063 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:27,067 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:27,067 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:33:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:33:27,690 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:27,702 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:27,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:33:27,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:33:27,703 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:33:27,704 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:33:27,704 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-09-20 15:33:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:29,287 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-09-20 15:33:29,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:33:29,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-20 15:33:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:29,290 INFO L225 Difference]: With dead ends: 84 [2018-09-20 15:33:29,290 INFO L226 Difference]: Without dead ends: 56 [2018-09-20 15:33:29,292 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:33:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-20 15:33:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-20 15:33:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-20 15:33:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-09-20 15:33:29,302 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-09-20 15:33:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:29,303 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-09-20 15:33:29,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:33:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-09-20 15:33:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-20 15:33:29,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:29,306 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:29,306 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1143554021, now seen corresponding path program 1 times [2018-09-20 15:33:29,307 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:29,308 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 [2018-09-20 15:33:29,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:29,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-20 15:33:29,419 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:29,436 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:29,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:33:29,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:33:29,437 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:33:29,437 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:29,438 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-09-20 15:33:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:29,469 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-09-20 15:33:29,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:33:29,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-09-20 15:33:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:29,472 INFO L225 Difference]: With dead ends: 80 [2018-09-20 15:33:29,472 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:33:29,473 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:33:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:33:29,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:33:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:33:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-09-20 15:33:29,482 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-09-20 15:33:29,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:29,482 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-09-20 15:33:29,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:33:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-09-20 15:33:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-20 15:33:29,485 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:29,486 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:29,486 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:29,486 INFO L82 PathProgramCache]: Analyzing trace with hash -113422118, now seen corresponding path program 1 times [2018-09-20 15:33:29,487 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:29,487 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 [2018-09-20 15:33:29,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:29,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:29,588 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 [2018-09-20 15:33:29,595 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 [2018-09-20 15:33:29,596 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:29,603 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:29,616 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:29,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:33:29,655 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 [2018-09-20 15:33:29,659 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 [2018-09-20 15:33:29,660 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:33:29,664 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:29,670 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:33:29,671 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:33:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:33:29,858 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:29,872 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:29,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:33:29,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:33:29,874 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:33:29,874 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:33:29,875 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-09-20 15:33:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:30,953 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-09-20 15:33:30,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:33:30,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-09-20 15:33:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:30,956 INFO L225 Difference]: With dead ends: 82 [2018-09-20 15:33:30,956 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:33:30,959 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:33:30,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:33:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:33:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:33:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-09-20 15:33:30,967 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-09-20 15:33:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:30,967 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-09-20 15:33:30,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:33:30,968 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-09-20 15:33:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-20 15:33:30,970 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:30,970 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:30,971 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:30,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1826494496, now seen corresponding path program 1 times [2018-09-20 15:33:30,971 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:30,972 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 [2018-09-20 15:33:30,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:31,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:33:31,127 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:31,146 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:31,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:33:31,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:33:31,147 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:33:31,147 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:33:31,147 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2018-09-20 15:33:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:31,243 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-09-20 15:33:31,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:33:31,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-09-20 15:33:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:31,254 INFO L225 Difference]: With dead ends: 75 [2018-09-20 15:33:31,254 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:33:31,255 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:33:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:33:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:33:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:33:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-09-20 15:33:31,263 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-09-20 15:33:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:31,264 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-09-20 15:33:31,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:33:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-09-20 15:33:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-20 15:33:31,266 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:31,266 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:31,267 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:31,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1659126174, now seen corresponding path program 1 times [2018-09-20 15:33:31,267 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:31,267 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 [2018-09-20 15:33:31,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:33:31,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:33:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-20 15:33:31,444 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:33:31,454 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:33:31,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:33:31,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:33:31,455 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:33:31,455 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:33:31,456 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 8 states. [2018-09-20 15:33:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:33:31,712 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-09-20 15:33:31,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-20 15:33:31,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-09-20 15:33:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:33:31,715 INFO L225 Difference]: With dead ends: 54 [2018-09-20 15:33:31,715 INFO L226 Difference]: Without dead ends: 51 [2018-09-20 15:33:31,716 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-20 15:33:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-20 15:33:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-20 15:33:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-20 15:33:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-20 15:33:31,723 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-09-20 15:33:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:33:31,723 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-20 15:33:31,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:33:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-20 15:33:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-20 15:33:31,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:33:31,726 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:33:31,726 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:33:31,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1902635068, now seen corresponding path program 1 times [2018-09-20 15:33:31,727 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:33:31,727 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-20 15:33:31,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:33:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:33:31,969 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:33:32,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:33:32 BoogieIcfgContainer [2018-09-20 15:33:32,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:33:32,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:33:32,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:33:32,094 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:33:32,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:33:25" (3/4) ... [2018-09-20 15:33:32,102 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-20 15:33:32,259 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:33:32,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:33:32,264 INFO L168 Benchmark]: Toolchain (without parser) took 7667.40 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 951.9 MB in the beginning and 797.1 MB in the end (delta: 154.8 MB). Peak memory consumption was 252.8 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,265 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-09-20 15:33:32,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,267 INFO L168 Benchmark]: Boogie Preprocessor took 77.03 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,269 INFO L168 Benchmark]: RCFGBuilder took 840.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,270 INFO L168 Benchmark]: TraceAbstraction took 6180.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 804.0 MB in the end (delta: 261.7 MB). Peak memory consumption was 261.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,271 INFO L168 Benchmark]: Witness Printer took 165.73 ms. Allocated memory is still 1.1 GB. Free memory was 804.0 MB in the beginning and 797.1 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:33:32,276 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 392.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.03 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 840.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6180.57 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 804.0 MB in the end (delta: 261.7 MB). Peak memory consumption was 261.7 MB. Max. memory is 11.5 GB. * Witness Printer took 165.73 ms. Allocated memory is still 1.1 GB. Free memory was 804.0 MB in the beginning and 797.1 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L18] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L18] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L18] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] COND FALSE, EXPR !(x < y ? x : y) [L41] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L41] RET return x < y ? x : y; [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] COND TRUE, EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L49] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L50] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L50] (w) = gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L50] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L51] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L53] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 6.0s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 122 SDslu, 1261 SDs, 0 SdLazy, 423 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 27895 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...