/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-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/double_req_bl_1252a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc33ca82d1494e328dda856c81c55426fcc855af ........................................................................................................................................................................................................................................................................................................................................................................................ 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/double_req_bl_1252a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc33ca82d1494e328dda856c81c55426fcc855af ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:06:32,295 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:06:32,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:06:32,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:06:32,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:06:32,316 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:06:32,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:06:32,327 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:06:32,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:06:32,331 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:06:32,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:06:32,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:06:32,334 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:06:32,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:06:32,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:06:32,337 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:06:32,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:06:32,347 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:06:32,354 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:06:32,356 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:06:32,357 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:06:32,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:06:32,363 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:06:32,365 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:06:32,365 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:06:32,366 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:06:32,367 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:06:32,368 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:06:32,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:06:32,373 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:06:32,373 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:06:32,374 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:06:32,374 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:06:32,374 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:06:32,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:06:32,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:06:32,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:06:32,408 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:06:32,408 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:06:32,413 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:06:32,416 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:06:32,417 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:06:32,418 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:06:32,418 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:06:32,418 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:06:32,418 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:06:32,418 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:06:32,419 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:06:32,419 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:06:32,419 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:06:32,419 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:06:32,419 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:06:32,420 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:06:32,420 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:06:32,420 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:06:32,420 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:06:32,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:06:32,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:06:32,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:06:32,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:32,423 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:06:32,423 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:06:32,423 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:06:32,423 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:06:32,424 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:06:32,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:06:32,424 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 -> bc33ca82d1494e328dda856c81c55426fcc855af [2018-09-20 15:06:32,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:06:32,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:06:32,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:06:32,527 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:06:32,528 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:06:32,529 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-20 15:06:32,883 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031766723/f0ecbcabd0b84e3084142a9d8bc0d29a/FLAG5811ad68d [2018-09-20 15:06:33,023 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:06:33,023 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-20 15:06:33,031 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031766723/f0ecbcabd0b84e3084142a9d8bc0d29a/FLAG5811ad68d [2018-09-20 15:06:33,047 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/031766723/f0ecbcabd0b84e3084142a9d8bc0d29a [2018-09-20 15:06:33,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:06:33,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:06:33,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:33,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:06:33,063 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:06:33,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638e1dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33, skipping insertion in model container [2018-09-20 15:06:33,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,081 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:06:33,314 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:33,333 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:06:33,352 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:33,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33 WrapperNode [2018-09-20 15:06:33,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:33,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:06:33,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:06:33,393 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:06:33,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (1/1) ... [2018-09-20 15:06:33,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:06:33,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:06:33,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:06:33,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:06:33,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (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 15:06:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:06:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:06:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:06:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-20 15:06:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-20 15:06:33,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:06:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:06:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:06:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:06:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:06:33,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:06:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:06:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:06:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-20 15:06:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-20 15:06:33,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:06:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:06:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:06:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:06:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:06:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:06:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:06:34,303 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:06:34,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:34 BoogieIcfgContainer [2018-09-20 15:06:34,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:06:34,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:06:34,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:06:34,310 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:06:34,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:06:33" (1/3) ... [2018-09-20 15:06:34,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b10575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:34, skipping insertion in model container [2018-09-20 15:06:34,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:33" (2/3) ... [2018-09-20 15:06:34,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b10575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:34, skipping insertion in model container [2018-09-20 15:06:34,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:34" (3/3) ... [2018-09-20 15:06:34,316 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-09-20 15:06:34,326 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:06:34,335 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:06:34,383 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:06:34,384 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:06:34,384 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:06:34,384 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:06:34,384 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:06:34,384 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:06:34,385 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:06:34,385 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:06:34,385 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:06:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-09-20 15:06:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-20 15:06:34,416 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:34,417 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 15:06:34,419 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:34,425 INFO L82 PathProgramCache]: Analyzing trace with hash -2005512365, now seen corresponding path program 1 times [2018-09-20 15:06:34,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:34,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:34,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:34,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:34,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:34,585 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 15:06:34,588 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:34,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:06:34,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:06:34,608 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:06:34,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:34,612 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-09-20 15:06:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:34,644 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2018-09-20 15:06:34,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:06:34,646 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-20 15:06:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:34,657 INFO L225 Difference]: With dead ends: 119 [2018-09-20 15:06:34,658 INFO L226 Difference]: Without dead ends: 60 [2018-09-20 15:06:34,662 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 15:06:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-20 15:06:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-20 15:06:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:06:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-09-20 15:06:34,715 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 22 [2018-09-20 15:06:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:34,715 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-09-20 15:06:34,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:06:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-09-20 15:06:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-20 15:06:34,718 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:34,718 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:34,719 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:34,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1797088685, now seen corresponding path program 1 times [2018-09-20 15:06:34,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:34,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:34,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:34,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:34,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:34,876 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 15:06:34,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:34,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:34,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:34,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:34,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:34,880 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 4 states. [2018-09-20 15:06:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:35,023 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2018-09-20 15:06:35,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:35,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-20 15:06:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:35,030 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:06:35,033 INFO L226 Difference]: Without dead ends: 64 [2018-09-20 15:06:35,035 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 15:06:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-20 15:06:35,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-20 15:06:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-20 15:06:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-20 15:06:35,049 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 35 [2018-09-20 15:06:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:35,049 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-20 15:06:35,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:35,050 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-20 15:06:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:06:35,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:35,051 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:35,052 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:35,052 INFO L82 PathProgramCache]: Analyzing trace with hash -957411872, now seen corresponding path program 1 times [2018-09-20 15:06:35,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:35,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:35,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:35,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:35,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:35,294 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 15:06:35,294 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:35,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:35,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:35,295 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:35,295 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:35,296 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 4 states. [2018-09-20 15:06:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:35,363 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2018-09-20 15:06:35,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:35,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-20 15:06:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:35,367 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:35,367 INFO L226 Difference]: Without dead ends: 68 [2018-09-20 15:06:35,368 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-20 15:06:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-20 15:06:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-20 15:06:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-20 15:06:35,380 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 38 [2018-09-20 15:06:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:35,380 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-20 15:06:35,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-20 15:06:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-20 15:06:35,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:35,383 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:35,384 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1540604065, now seen corresponding path program 1 times [2018-09-20 15:06:35,384 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:06:35,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:06:35,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:35,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:35,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:06:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:06:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:06:35,481 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:06:35,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:06:35 BoogieIcfgContainer [2018-09-20 15:06:35,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:06:35,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:06:35,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:06:35,536 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:06:35,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:34" (3/4) ... [2018-09-20 15:06:35,541 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:06:35,541 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:06:35,542 INFO L168 Benchmark]: Toolchain (without parser) took 2490.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 951.8 MB in the beginning and 1.0 GB in the end (delta: -70.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:35,544 INFO L168 Benchmark]: CDTParser took 0.24 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 15:06:35,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.47 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 15:06:35,546 INFO L168 Benchmark]: Boogie Preprocessor took 78.61 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 15:06:35,547 INFO L168 Benchmark]: RCFGBuilder took 832.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:35,548 INFO L168 Benchmark]: TraceAbstraction took 1227.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:35,549 INFO L168 Benchmark]: Witness Printer took 7.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:35,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 336.47 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 78.61 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 832.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1227.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. * Witness Printer took 7.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967300, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L24] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L27] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967300, ew_u={4294967301:0}, x=4294967300] [L28] FCALL ew_u.value = (x) VAL [\old(x)=4294967300, ew_u={4294967301:0}, x=4294967300] [L29] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, x=4294967300] [L29] (msw) = ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L29] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L30] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967300] [L30] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L30] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967303, \old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L31] COND FALSE !(0) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] RET return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=4293918721, x=4294967300] [L52] EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=0, __fpclassify_double(x)=0, x=4294967300, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] RET return y; VAL [\old(x)=4294967300, \old(y)=0, \result=0, x=4294967300, y=0] [L81] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4294967300, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967300, y=0] [L84] COND FALSE, EXPR !(res == 0.0 && __signbit_double(res) == 0) VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967300, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4294967300, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 0 SDslu, 258 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=64occurred 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, 0.3s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3534 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 15:06:38,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:06:38,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:06:38,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:06:38,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:06:38,153 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:06:38,154 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:06:38,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:06:38,159 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:06:38,160 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:06:38,161 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:06:38,161 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:06:38,162 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:06:38,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:06:38,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:06:38,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:06:38,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:06:38,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:06:38,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:06:38,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:06:38,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:06:38,177 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:06:38,180 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:06:38,180 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:06:38,181 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:06:38,182 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:06:38,183 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:06:38,185 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:06:38,186 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:06:38,190 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:06:38,190 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:06:38,191 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:06:38,191 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:06:38,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:06:38,196 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:06:38,197 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:06:38,197 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:06:38,231 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:06:38,232 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:06:38,233 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:06:38,233 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:06:38,234 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:06:38,236 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:06:38,236 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:06:38,236 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:06:38,236 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:06:38,237 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:06:38,237 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:06:38,237 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:06:38,237 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:06:38,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:06:38,238 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:06:38,238 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:06:38,238 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:06:38,238 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:06:38,238 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:06:38,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:06:38,241 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:06:38,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:06:38,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:06:38,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:38,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:06:38,242 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:06:38,244 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:06:38,244 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:06:38,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:06:38,244 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:06:38,245 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:06:38,245 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 -> bc33ca82d1494e328dda856c81c55426fcc855af [2018-09-20 15:06:38,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:06:38,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:06:38,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:06:38,358 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:06:38,358 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:06:38,360 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-20 15:06:38,711 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e04232774/ada65aa5bfd14862af206bffd57e28ae/FLAG6720866d0 [2018-09-20 15:06:38,869 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:06:38,869 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-20 15:06:38,880 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e04232774/ada65aa5bfd14862af206bffd57e28ae/FLAG6720866d0 [2018-09-20 15:06:38,906 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e04232774/ada65aa5bfd14862af206bffd57e28ae [2018-09-20 15:06:38,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:06:38,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:06:38,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:38,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:06:38,926 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:06:38,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:38" (1/1) ... [2018-09-20 15:06:38,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1664520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:38, skipping insertion in model container [2018-09-20 15:06:38,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:06:38" (1/1) ... [2018-09-20 15:06:38,944 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:06:39,230 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:39,254 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:06:39,291 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:06:39,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39 WrapperNode [2018-09-20 15:06:39,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:06:39,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:06:39,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:06:39,331 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:06:39,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... [2018-09-20 15:06:39,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:06:39,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:06:39,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:06:39,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:06:39,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:06:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:06:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:06:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-20 15:06:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-20 15:06:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-20 15:06:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:06:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:06:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-20 15:06:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-20 15:06:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:06:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-20 15:06:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:06:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:06:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-20 15:06:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-20 15:06:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:06:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:06:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:06:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-20 15:06:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:06:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:06:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-20 15:06:39,817 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:39,866 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:40,156 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:40,178 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:40,196 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:06:40,259 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:06:40,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:40 BoogieIcfgContainer [2018-09-20 15:06:40,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:06:40,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:06:40,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:06:40,265 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:06:40,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:06:38" (1/3) ... [2018-09-20 15:06:40,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:40, skipping insertion in model container [2018-09-20 15:06:40,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:06:39" (2/3) ... [2018-09-20 15:06:40,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9276a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:06:40, skipping insertion in model container [2018-09-20 15:06:40,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:40" (3/3) ... [2018-09-20 15:06:40,269 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-09-20 15:06:40,279 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:06:40,287 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:06:40,331 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:06:40,332 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:06:40,332 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:06:40,333 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:06:40,333 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:06:40,333 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:06:40,333 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:06:40,333 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:06:40,334 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:06:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-20 15:06:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-20 15:06:40,362 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:40,363 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 15:06:40,366 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1225609055, now seen corresponding path program 1 times [2018-09-20 15:06:40,377 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:40,377 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 15:06:40,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:40,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:40,493 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 15:06:40,493 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:40,508 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:40,510 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:06:40,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:06:40,529 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:06:40,530 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:06:40,532 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-20 15:06:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:40,564 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2018-09-20 15:06:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:06:40,566 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-20 15:06:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:40,578 INFO L225 Difference]: With dead ends: 115 [2018-09-20 15:06:40,578 INFO L226 Difference]: Without dead ends: 58 [2018-09-20 15:06:40,583 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 15:06:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-20 15:06:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-20 15:06:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-20 15:06:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-09-20 15:06:40,637 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2018-09-20 15:06:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:40,638 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-09-20 15:06:40,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:06:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-09-20 15:06:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-20 15:06:40,641 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:40,641 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 15:06:40,641 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:40,642 INFO L82 PathProgramCache]: Analyzing trace with hash 132746963, now seen corresponding path program 1 times [2018-09-20 15:06:40,642 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:40,643 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) [2018-09-20 15:06:40,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:40,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:40,884 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 15:06:40,884 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:40,899 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:40,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:40,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:40,902 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:40,902 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:40,902 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 4 states. [2018-09-20 15:06:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:41,057 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2018-09-20 15:06:41,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:41,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-20 15:06:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:41,062 INFO L225 Difference]: With dead ends: 84 [2018-09-20 15:06:41,062 INFO L226 Difference]: Without dead ends: 61 [2018-09-20 15:06:41,064 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-20 15:06:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-20 15:06:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-20 15:06:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-09-20 15:06:41,079 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2018-09-20 15:06:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:41,080 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-09-20 15:06:41,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-09-20 15:06:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-20 15:06:41,082 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:41,082 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:41,083 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:41,083 INFO L82 PathProgramCache]: Analyzing trace with hash 201431320, now seen corresponding path program 1 times [2018-09-20 15:06:41,084 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:41,084 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 15:06:41,090 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 15:06:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:41,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:41,338 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 14 treesize of output 11 [2018-09-20 15:06:41,344 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 11 treesize of output 10 [2018-09-20 15:06:41,345 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:41,360 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:41,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:41,446 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:41,598 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 20 treesize of output 16 [2018-09-20 15:06:41,607 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 16 treesize of output 4 [2018-09-20 15:06:41,607 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:41,614 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:41,626 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:41,626 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:42,244 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 15:06:42,245 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:42,258 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:42,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:42,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:42,260 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:42,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:42,261 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-09-20 15:06:43,056 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-20 15:06:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:44,775 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2018-09-20 15:06:44,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:44,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-09-20 15:06:44,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:44,779 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:44,779 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:44,780 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-20 15:06:44,792 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 35 [2018-09-20 15:06:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:44,793 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-20 15:06:44,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:44,793 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-20 15:06:44,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-20 15:06:44,795 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:44,795 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:44,796 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:44,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1544592367, now seen corresponding path program 1 times [2018-09-20 15:06:44,797 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:44,798 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 15:06:44,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:44,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:44,944 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 15:06:44,944 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:44,957 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:44,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:44,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:44,958 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:44,958 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:44,959 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-20 15:06:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:45,031 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2018-09-20 15:06:45,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:45,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-20 15:06:45,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:45,035 INFO L225 Difference]: With dead ends: 89 [2018-09-20 15:06:45,035 INFO L226 Difference]: Without dead ends: 66 [2018-09-20 15:06:45,036 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 15:06:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-20 15:06:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-09-20 15:06:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-20 15:06:45,046 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 36 [2018-09-20 15:06:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:45,047 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-20 15:06:45,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:45,048 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-20 15:06:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-20 15:06:45,049 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:45,049 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:06:45,050 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:45,051 INFO L82 PathProgramCache]: Analyzing trace with hash -553142156, now seen corresponding path program 1 times [2018-09-20 15:06:45,051 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:45,051 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 15:06:45,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:45,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:45,186 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 14 treesize of output 11 [2018-09-20 15:06:45,192 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 11 treesize of output 10 [2018-09-20 15:06:45,192 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:45,202 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:45,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:45,218 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:45,285 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 20 treesize of output 16 [2018-09-20 15:06:45,292 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 16 treesize of output 4 [2018-09-20 15:06:45,293 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:45,297 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:45,311 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:45,312 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:45,605 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 15:06:45,606 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:45,620 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:45,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:45,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:45,622 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:45,623 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:45,623 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 10 states. [2018-09-20 15:06:46,166 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-20 15:06:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:47,990 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2018-09-20 15:06:47,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:47,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-20 15:06:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:47,994 INFO L225 Difference]: With dead ends: 90 [2018-09-20 15:06:47,994 INFO L226 Difference]: Without dead ends: 62 [2018-09-20 15:06:47,996 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-20 15:06:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2018-09-20 15:06:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-20 15:06:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-09-20 15:06:48,006 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 37 [2018-09-20 15:06:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:48,007 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-09-20 15:06:48,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-09-20 15:06:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-20 15:06:48,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:48,010 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 15:06:48,010 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:48,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1819330129, now seen corresponding path program 1 times [2018-09-20 15:06:48,012 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:48,012 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 15:06:48,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:48,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:48,148 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:48,165 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:48,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:48,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:48,167 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:48,167 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:48,167 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2018-09-20 15:06:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:48,268 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2018-09-20 15:06:48,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:48,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-20 15:06:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:48,272 INFO L225 Difference]: With dead ends: 86 [2018-09-20 15:06:48,275 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:48,276 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 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 15:06:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-20 15:06:48,292 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2018-09-20 15:06:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:48,293 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-20 15:06:48,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-20 15:06:48,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-20 15:06:48,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:48,302 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:06:48,302 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1654387358, now seen corresponding path program 1 times [2018-09-20 15:06:48,303 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:48,303 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 15:06:48,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:48,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:48,521 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 14 treesize of output 11 [2018-09-20 15:06:48,527 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 11 treesize of output 10 [2018-09-20 15:06:48,529 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:48,534 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:48,552 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:48,552 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:48,618 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 20 treesize of output 16 [2018-09-20 15:06:48,638 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 16 treesize of output 4 [2018-09-20 15:06:48,639 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:48,663 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:48,736 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:48,737 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:06:49,474 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:49,485 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:49,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:49,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:49,486 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:49,486 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:49,487 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2018-09-20 15:06:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:51,867 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2018-09-20 15:06:51,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:51,869 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-09-20 15:06:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:51,870 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:51,871 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:51,871 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:51,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:51,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-20 15:06:51,880 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2018-09-20 15:06:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:51,881 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-20 15:06:51,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-20 15:06:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-20 15:06:51,883 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:51,883 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 15:06:51,884 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash -953708108, now seen corresponding path program 1 times [2018-09-20 15:06:51,885 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:51,886 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 15:06:51,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:52,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:52,192 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:52,204 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:52,204 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-20 15:06:52,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-20 15:06:52,205 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-20 15:06:52,205 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-20 15:06:52,205 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2018-09-20 15:06:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:52,446 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2018-09-20 15:06:52,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-20 15:06:52,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-09-20 15:06:52,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:52,449 INFO L225 Difference]: With dead ends: 87 [2018-09-20 15:06:52,449 INFO L226 Difference]: Without dead ends: 63 [2018-09-20 15:06:52,450 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-20 15:06:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-20 15:06:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-20 15:06:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-20 15:06:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-20 15:06:52,457 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 56 [2018-09-20 15:06:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:52,458 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-20 15:06:52,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-20 15:06:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-20 15:06:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-20 15:06:52,461 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:52,461 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 15:06:52,461 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1763054734, now seen corresponding path program 1 times [2018-09-20 15:06:52,462 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:52,462 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:52,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:52,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:52,714 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:52,726 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:52,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-20 15:06:52,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-20 15:06:52,727 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-20 15:06:52,727 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-20 15:06:52,728 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-09-20 15:06:53,012 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-20 15:06:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:53,222 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2018-09-20 15:06:53,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-20 15:06:53,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-09-20 15:06:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:53,224 INFO L225 Difference]: With dead ends: 70 [2018-09-20 15:06:53,224 INFO L226 Difference]: Without dead ends: 67 [2018-09-20 15:06:53,225 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-20 15:06:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-20 15:06:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-20 15:06:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-20 15:06:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-20 15:06:53,233 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2018-09-20 15:06:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:53,233 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-20 15:06:53,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-20 15:06:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-20 15:06:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-20 15:06:53,237 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:53,237 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:06:53,237 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1622182773, now seen corresponding path program 1 times [2018-09-20 15:06:53,238 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:53,238 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:53,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:53,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-20 15:06:53,385 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:53,396 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:53,397 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-20 15:06:53,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-20 15:06:53,397 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-20 15:06:53,399 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-20 15:06:53,400 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-09-20 15:06:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:53,441 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2018-09-20 15:06:53,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-20 15:06:53,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-20 15:06:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:53,442 INFO L225 Difference]: With dead ends: 91 [2018-09-20 15:06:53,443 INFO L226 Difference]: Without dead ends: 68 [2018-09-20 15:06:53,443 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 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 15:06:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-20 15:06:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-20 15:06:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-20 15:06:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-09-20 15:06:53,454 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 56 [2018-09-20 15:06:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:53,455 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-09-20 15:06:53,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-20 15:06:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-09-20 15:06:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-20 15:06:53,456 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:53,457 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2018-09-20 15:06:53,457 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1409894658, now seen corresponding path program 1 times [2018-09-20 15:06:53,459 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:53,459 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:53,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:53,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:53,624 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 14 treesize of output 11 [2018-09-20 15:06:53,630 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 11 treesize of output 10 [2018-09-20 15:06:53,631 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:53,636 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:53,698 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:53,699 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:53,752 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 20 treesize of output 16 [2018-09-20 15:06:53,757 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 16 treesize of output 4 [2018-09-20 15:06:53,757 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:53,760 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:53,769 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:53,770 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-20 15:06:54,054 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:54,065 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:54,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-20 15:06:54,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-20 15:06:54,066 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-20 15:06:54,066 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-20 15:06:54,067 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-09-20 15:06:55,235 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-20 15:06:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:56,209 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-09-20 15:06:56,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-20 15:06:56,211 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-09-20 15:06:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:56,212 INFO L225 Difference]: With dead ends: 90 [2018-09-20 15:06:56,212 INFO L226 Difference]: Without dead ends: 57 [2018-09-20 15:06:56,213 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-20 15:06:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-20 15:06:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-20 15:06:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-20 15:06:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-09-20 15:06:56,218 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 57 [2018-09-20 15:06:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:56,218 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-09-20 15:06:56,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-20 15:06:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-09-20 15:06:56,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-20 15:06:56,221 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:06:56,221 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 15:06:56,222 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:06:56,223 INFO L82 PathProgramCache]: Analyzing trace with hash -245978473, now seen corresponding path program 1 times [2018-09-20 15:06:56,223 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:06:56,223 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-20 15:06:56,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:06:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:06:56,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:06:56,505 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 14 treesize of output 11 [2018-09-20 15:06:56,511 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 11 treesize of output 10 [2018-09-20 15:06:56,512 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:56,518 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:56,533 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:56,533 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-20 15:06:56,612 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 20 treesize of output 16 [2018-09-20 15:06:56,641 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 16 treesize of output 4 [2018-09-20 15:06:56,641 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:06:56,666 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:06:56,734 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-20 15:06:56,735 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-20 15:06:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-20 15:06:57,169 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:06:57,180 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:06:57,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-20 15:06:57,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-20 15:06:57,181 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-20 15:06:57,181 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-20 15:06:57,182 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2018-09-20 15:06:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:06:59,304 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-09-20 15:06:59,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-20 15:06:59,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2018-09-20 15:06:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:06:59,306 INFO L225 Difference]: With dead ends: 57 [2018-09-20 15:06:59,306 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:06:59,307 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2018-09-20 15:06:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:06:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:06:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:06:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:06:59,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2018-09-20 15:06:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:06:59,308 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:06:59,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-20 15:06:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:06:59,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:06:59,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:06:59,711 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point L29-2(line 29) no Hoare annotation was computed. [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 23 48) no Hoare annotation was computed. [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-09-20 15:06:59,717 INFO L426 ceAbstractionStarter]: For program point L27-2(line 27) no Hoare annotation was computed. [2018-09-20 15:06:59,718 INFO L426 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2018-09-20 15:06:59,718 INFO L429 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 23 48) the Hoare annotation is: true [2018-09-20 15:06:59,718 INFO L426 ceAbstractionStarter]: For program point L36(lines 36 47) no Hoare annotation was computed. [2018-09-20 15:06:59,718 INFO L426 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-09-20 15:06:59,718 INFO L426 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-09-20 15:06:59,718 INFO L426 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-09-20 15:06:59,718 INFO L426 ceAbstractionStarter]: For program point L30-2(line 30) no Hoare annotation was computed. [2018-09-20 15:06:59,719 INFO L426 ceAbstractionStarter]: For program point L30-3(line 30) no Hoare annotation was computed. [2018-09-20 15:06:59,719 INFO L426 ceAbstractionStarter]: For program point L26-1(lines 26 31) no Hoare annotation was computed. [2018-09-20 15:06:59,719 INFO L422 ceAbstractionStarter]: At program point L26-3(lines 26 31) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-09-20 15:06:59,719 INFO L426 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 23 48) no Hoare annotation was computed. [2018-09-20 15:06:59,719 INFO L426 ceAbstractionStarter]: For program point L26-4(lines 23 48) no Hoare annotation was computed. [2018-09-20 15:06:59,719 INFO L426 ceAbstractionStarter]: For program point L43(lines 43 47) no Hoare annotation was computed. [2018-09-20 15:06:59,720 INFO L426 ceAbstractionStarter]: For program point L39(lines 39 47) no Hoare annotation was computed. [2018-09-20 15:06:59,720 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:06:59,720 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:06:59,720 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:06:59,720 INFO L426 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2018-09-20 15:06:59,720 INFO L429 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 50 58) the Hoare annotation is: true [2018-09-20 15:06:59,720 INFO L426 ceAbstractionStarter]: For program point L57-2(line 57) no Hoare annotation was computed. [2018-09-20 15:06:59,721 INFO L422 ceAbstractionStarter]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= fmax_double_~x |fmax_double_#in~x|))) (or (and .cse0 (= fmax_double_~y |fmax_double_#in~y|)) (and .cse0 (or (exists ((v_prenex_3 (_ BitVec 64))) (and (not (bvuge ((_ extract 63 32) v_prenex_3) (_ bv2147483648 32))) (= (fp ((_ extract 63 63) v_prenex_3) ((_ extract 62 52) v_prenex_3) ((_ extract 51 0) v_prenex_3)) |fmax_double_#in~x|))) (exists ((|v_q#valueAsBitvector_7| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_7|) ((_ extract 62 52) |v_q#valueAsBitvector_7|) ((_ extract 51 0) |v_q#valueAsBitvector_7|)) |fmax_double_#in~x|) (not (bvule ((_ extract 63 32) |v_q#valueAsBitvector_7|) (_ bv2148532223 32))))))))) [2018-09-20 15:06:59,721 INFO L426 ceAbstractionStarter]: For program point L54-1(lines 54 55) no Hoare annotation was computed. [2018-09-20 15:06:59,721 INFO L422 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-09-20 15:06:59,721 INFO L426 ceAbstractionStarter]: For program point L52-1(lines 52 53) no Hoare annotation was computed. [2018-09-20 15:06:59,721 INFO L426 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 50 58) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 50 58) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L66-2(line 66) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L64-1(line 64) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L64-2(line 64) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2018-09-20 15:06:59,722 INFO L426 ceAbstractionStarter]: For program point L64-3(line 64) no Hoare annotation was computed. [2018-09-20 15:06:59,723 INFO L422 ceAbstractionStarter]: At program point L63-3(lines 63 67) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-09-20 15:06:59,723 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 60 70) no Hoare annotation was computed. [2018-09-20 15:06:59,723 INFO L426 ceAbstractionStarter]: For program point L63-4(lines 63 67) no Hoare annotation was computed. [2018-09-20 15:06:59,723 INFO L426 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 60 70) no Hoare annotation was computed. [2018-09-20 15:06:59,723 INFO L429 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 60 70) the Hoare annotation is: true [2018-09-20 15:06:59,723 INFO L426 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-09-20 15:06:59,726 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:06:59,726 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:06:59,727 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:06:59,727 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:06:59,727 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 72 90) the Hoare annotation is: true [2018-09-20 15:06:59,727 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 72 90) no Hoare annotation was computed. [2018-09-20 15:06:59,727 INFO L426 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-09-20 15:06:59,727 INFO L426 ceAbstractionStarter]: For program point L84(line 84) no Hoare annotation was computed. [2018-09-20 15:06:59,727 INFO L422 ceAbstractionStarter]: At program point L84-1(line 84) the Hoare annotation is: (and (= (_ +zero 11 53) main_~res~0) |main_#t~short11| (= (_ +zero 11 53) main_~y~0) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-09-20 15:06:59,727 INFO L426 ceAbstractionStarter]: For program point L84-2(line 84) no Hoare annotation was computed. [2018-09-20 15:06:59,728 INFO L422 ceAbstractionStarter]: At program point L81(line 81) the Hoare annotation is: (and (= (_ +zero 11 53) main_~y~0) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-09-20 15:06:59,728 INFO L426 ceAbstractionStarter]: For program point L81-1(line 81) no Hoare annotation was computed. [2018-09-20 15:06:59,728 INFO L426 ceAbstractionStarter]: For program point L84-4(lines 84 87) no Hoare annotation was computed. [2018-09-20 15:06:59,728 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 72 90) no Hoare annotation was computed. [2018-09-20 15:06:59,728 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2018-09-20 15:06:59,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:06:59 BoogieIcfgContainer [2018-09-20 15:06:59,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:06:59,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:06:59,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:06:59,742 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:06:59,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:06:40" (3/4) ... [2018-09-20 15:06:59,747 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:06:59,753 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:06:59,753 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-20 15:06:59,753 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-09-20 15:06:59,753 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-09-20 15:06:59,754 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:06:59,759 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-20 15:06:59,760 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-20 15:06:59,760 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:06:59,789 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-09-20 15:06:59,790 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-09-20 15:06:59,830 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:06:59,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:06:59,833 INFO L168 Benchmark]: Toolchain (without parser) took 20921.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Free memory was 953.2 MB in the beginning and 874.2 MB in the end (delta: 79.0 MB). Peak memory consumption was 271.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:59,834 INFO L168 Benchmark]: CDTParser took 0.22 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 15:06:59,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.56 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:59,836 INFO L168 Benchmark]: Boogie Preprocessor took 99.02 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:59,837 INFO L168 Benchmark]: RCFGBuilder took 830.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:59,837 INFO L168 Benchmark]: TraceAbstraction took 19479.67 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 874.2 MB in the end (delta: 220.7 MB). Peak memory consumption was 286.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:06:59,838 INFO L168 Benchmark]: Witness Printer took 88.91 ms. Allocated memory is still 1.2 GB. Free memory is still 874.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:06:59,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 411.56 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 99.02 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 830.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19479.67 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 874.2 MB in the end (delta: 220.7 MB). Peak memory consumption was 286.2 MB. Max. memory is 11.5 GB. * Witness Printer took 88.91 ms. Allocated memory is still 1.2 GB. Free memory is still 874.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 85]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 62 locations, 1 error locations. SAFE Result, 19.4s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 12.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 690 SDtfs, 261 SDslu, 2789 SDs, 0 SdLazy, 1014 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 85 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 557 ConstructedInterpolants, 86 QuantifiedInterpolants, 116800 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1232 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...