./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/float-newlib/double_req_bl_0730c.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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ..................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/float-newlib/double_req_bl_0730c.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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:43:07,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:43:07,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:43:07,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:43:07,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:43:07,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:43:07,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:43:07,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:43:07,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:43:07,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:43:07,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:43:07,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:43:07,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:43:07,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:43:07,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:43:07,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:43:07,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:43:07,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:43:07,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:43:07,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:43:07,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:43:07,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:43:07,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:43:07,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:43:07,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:43:07,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:43:07,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:43:07,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:43:07,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:43:07,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:43:07,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:43:07,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:43:07,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:43:07,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:43:07,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:43:07,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:43:07,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:43:07,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:43:07,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:43:07,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:43:07,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:43:07,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:43:07,405 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:43:07,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:43:07,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:43:07,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:43:07,408 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:43:07,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:43:07,409 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:43:07,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:43:07,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:43:07,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:43:07,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:43:07,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:43:07,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:43:07,411 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:43:07,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:43:07,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:43:07,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:43:07,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:43:07,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:43:07,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:43:07,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:43:07,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:43:07,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:43:07,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:43:07,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:43:07,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:43:07,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:43:07,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:43:07,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-27 23:43:07,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:43:07,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:43:07,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:43:07,785 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:43:07,786 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:43:07,787 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-27 23:43:07,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4394aaea1/0267f2ece9eb4a3499a110a03b918a26/FLAGcd8b389fe [2019-11-27 23:43:08,349 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:43:08,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-27 23:43:08,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4394aaea1/0267f2ece9eb4a3499a110a03b918a26/FLAGcd8b389fe [2019-11-27 23:43:08,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4394aaea1/0267f2ece9eb4a3499a110a03b918a26 [2019-11-27 23:43:08,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:43:08,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:43:08,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:43:08,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:43:08,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:43:08,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:43:08" (1/1) ... [2019-11-27 23:43:08,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc447bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:08, skipping insertion in model container [2019-11-27 23:43:08,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:43:08" (1/1) ... [2019-11-27 23:43:08,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:43:08,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:43:09,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:43:09,184 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:43:09,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:43:09,328 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:43:09,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09 WrapperNode [2019-11-27 23:43:09,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:43:09,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:43:09,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:43:09,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:43:09,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:43:09,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:43:09,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:43:09,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:43:09,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (1/1) ... [2019-11-27 23:43:09,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:43:09,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:43:09,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:43:09,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:43:09,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (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 [2019-11-27 23:43:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:43:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-27 23:43:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:43:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:43:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:43:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:43:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:43:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:43:10,052 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:43:10,053 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:43:10,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:43:10 BoogieIcfgContainer [2019-11-27 23:43:10,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:43:10,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:43:10,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:43:10,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:43:10,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:43:08" (1/3) ... [2019-11-27 23:43:10,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5676023c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:43:10, skipping insertion in model container [2019-11-27 23:43:10,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:09" (2/3) ... [2019-11-27 23:43:10,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5676023c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:43:10, skipping insertion in model container [2019-11-27 23:43:10,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:43:10" (3/3) ... [2019-11-27 23:43:10,064 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-27 23:43:10,076 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:43:10,084 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:43:10,097 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:43:10,119 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:43:10,120 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:43:10,120 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:43:10,120 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:43:10,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:43:10,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:43:10,121 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:43:10,122 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:43:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-27 23:43:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:43:10,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:10,146 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:10,146 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:10,151 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-27 23:43:10,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:43:10,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114921242] [2019-11-27 23:43:10,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:43:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:10,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114921242] [2019-11-27 23:43:10,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:10,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:43:10,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558155277] [2019-11-27 23:43:10,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:43:10,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:43:10,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:43:10,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:43:10,302 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-27 23:43:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:10,328 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-27 23:43:10,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:43:10,329 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-27 23:43:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:10,340 INFO L225 Difference]: With dead ends: 104 [2019-11-27 23:43:10,340 INFO L226 Difference]: Without dead ends: 50 [2019-11-27 23:43:10,344 INFO L630 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 [2019-11-27 23:43:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-27 23:43:10,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-27 23:43:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-27 23:43:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-27 23:43:10,384 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-27 23:43:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:10,385 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-27 23:43:10,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:43:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-27 23:43:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:43:10,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:10,386 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:10,386 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:10,387 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-27 23:43:10,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:43:10,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688248555] [2019-11-27 23:43:10,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:43:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:43:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:43:10,502 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:43:10,503 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:43:10,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:43:10 BoogieIcfgContainer [2019-11-27 23:43:10,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:43:10,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:43:10,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:43:10,540 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:43:10,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:43:10" (3/4) ... [2019-11-27 23:43:10,545 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:43:10,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:43:10,548 INFO L168 Benchmark]: Toolchain (without parser) took 1726.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -87.9 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:10,549 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:43:10,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:10,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:43:10,551 INFO L168 Benchmark]: Boogie Preprocessor took 55.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:10,552 INFO L168 Benchmark]: RCFGBuilder took 605.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:10,553 INFO L168 Benchmark]: TraceAbstraction took 483.13 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:10,553 INFO L168 Benchmark]: Witness Printer took 5.69 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. [2019-11-27 23:43:10,558 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 508.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 605.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 483.13 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * Witness Printer took 5.69 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: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 153, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L149] double x = 0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-30f4e4a [2019-11-27 23:43:12,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:43:12,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:43:12,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:43:12,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:43:12,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:43:12,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:43:12,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:43:12,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:43:12,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:43:12,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:43:12,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:43:12,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:43:12,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:43:12,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:43:12,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:43:12,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:43:12,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:43:12,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:43:12,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:43:12,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:43:12,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:43:12,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:43:12,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:43:12,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:43:12,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:43:12,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:43:12,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:43:12,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:43:12,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:43:12,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:43:12,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:43:12,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:43:12,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:43:12,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:43:12,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:43:12,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:43:12,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:43:12,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:43:12,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:43:12,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:43:12,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:43:12,773 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:43:12,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:43:12,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:43:12,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:43:12,776 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:43:12,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:43:12,776 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:43:12,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:43:12,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:43:12,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:43:12,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:43:12,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:43:12,778 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:43:12,778 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:43:12,779 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:43:12,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:43:12,779 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:43:12,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:43:12,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:43:12,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:43:12,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:43:12,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:43:12,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:43:12,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:43:12,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:43:12,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:43:12,782 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:43:12,782 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:43:12,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:43:12,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:43:12,783 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-27 23:43:13,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:43:13,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:43:13,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:43:13,115 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:43:13,115 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:43:13,117 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-27 23:43:13,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fce3efe/583ec736a0b5452b833be4dc956d5ac8/FLAG8d7e4acad [2019-11-27 23:43:13,702 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:43:13,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-27 23:43:13,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fce3efe/583ec736a0b5452b833be4dc956d5ac8/FLAG8d7e4acad [2019-11-27 23:43:14,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10fce3efe/583ec736a0b5452b833be4dc956d5ac8 [2019-11-27 23:43:14,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:43:14,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:43:14,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:43:14,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:43:14,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:43:14,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a4f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14, skipping insertion in model container [2019-11-27 23:43:14,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:43:14,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:43:14,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:43:14,404 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:43:14,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:43:14,570 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:43:14,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14 WrapperNode [2019-11-27 23:43:14,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:43:14,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:43:14,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:43:14,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:43:14,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:43:14,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:43:14,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:43:14,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:43:14,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (1/1) ... [2019-11-27 23:43:14,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:43:14,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:43:14,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:43:14,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:43:14,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (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 [2019-11-27 23:43:14,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-27 23:43:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-27 23:43:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:43:14,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:43:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:43:14,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:43:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-27 23:43:14,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:43:17,533 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:43:17,533 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:43:17,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:43:17 BoogieIcfgContainer [2019-11-27 23:43:17,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:43:17,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:43:17,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:43:17,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:43:17,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:43:14" (1/3) ... [2019-11-27 23:43:17,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd50d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:43:17, skipping insertion in model container [2019-11-27 23:43:17,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:43:14" (2/3) ... [2019-11-27 23:43:17,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd50d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:43:17, skipping insertion in model container [2019-11-27 23:43:17,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:43:17" (3/3) ... [2019-11-27 23:43:17,543 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-27 23:43:17,553 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:43:17,560 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:43:17,571 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:43:17,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:43:17,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:43:17,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:43:17,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:43:17,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:43:17,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:43:17,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:43:17,593 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:43:17,607 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-27 23:43:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-27 23:43:17,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:17,614 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:17,615 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:17,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:17,621 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-27 23:43:17,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:17,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795190945] [2019-11-27 23:43:17,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:43:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:18,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:43:18,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:18,056 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:18,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795190945] [2019-11-27 23:43:18,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:18,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:43:18,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811980503] [2019-11-27 23:43:18,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:43:18,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:18,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:43:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:43:18,083 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-27 23:43:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:18,105 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-27 23:43:18,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:43:18,107 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-27 23:43:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:18,116 INFO L225 Difference]: With dead ends: 104 [2019-11-27 23:43:18,117 INFO L226 Difference]: Without dead ends: 50 [2019-11-27 23:43:18,120 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:43:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-27 23:43:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-27 23:43:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-27 23:43:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-27 23:43:18,158 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-27 23:43:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:18,159 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-27 23:43:18,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:43:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-27 23:43:18,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 23:43:18,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:18,161 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:18,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:43:18,369 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-27 23:43:18,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:18,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315675347] [2019-11-27 23:43:18,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 23:43:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:18,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:43:18,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:18,796 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:18,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315675347] [2019-11-27 23:43:18,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:18,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:43:18,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370741309] [2019-11-27 23:43:18,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:43:18,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:43:18,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:43:18,849 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2019-11-27 23:43:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:20,228 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2019-11-27 23:43:20,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:43:20,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-27 23:43:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:20,234 INFO L225 Difference]: With dead ends: 105 [2019-11-27 23:43:20,235 INFO L226 Difference]: Without dead ends: 63 [2019-11-27 23:43:20,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:43:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-27 23:43:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2019-11-27 23:43:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-27 23:43:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2019-11-27 23:43:20,250 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2019-11-27 23:43:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:20,251 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2019-11-27 23:43:20,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:43:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2019-11-27 23:43:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:43:20,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:20,254 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:20,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:43:20,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2019-11-27 23:43:20,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:20,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100850428] [2019-11-27 23:43:20,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-27 23:43:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:20,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:43:20,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:20,592 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:20,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:43:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:20,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100850428] [2019-11-27 23:43:20,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:20,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-27 23:43:20,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149399798] [2019-11-27 23:43:20,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 23:43:20,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:20,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 23:43:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:43:20,652 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 7 states. [2019-11-27 23:43:20,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:20,884 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2019-11-27 23:43:20,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:43:20,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-27 23:43:20,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:20,886 INFO L225 Difference]: With dead ends: 63 [2019-11-27 23:43:20,887 INFO L226 Difference]: Without dead ends: 60 [2019-11-27 23:43:20,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:43:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-27 23:43:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-11-27 23:43:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-27 23:43:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2019-11-27 23:43:20,898 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2019-11-27 23:43:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:20,898 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2019-11-27 23:43:20,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 23:43:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2019-11-27 23:43:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:43:20,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:20,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:21,118 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:43:21,118 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2019-11-27 23:43:21,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:21,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936830722] [2019-11-27 23:43:21,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:43:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:21,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-27 23:43:21,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:21,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:43:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:21,362 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:21,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:43:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:21,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936830722] [2019-11-27 23:43:21,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:21,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2019-11-27 23:43:21,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894506207] [2019-11-27 23:43:21,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-27 23:43:21,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:21,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-27 23:43:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-27 23:43:21,599 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 14 states. [2019-11-27 23:43:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:22,068 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2019-11-27 23:43:22,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-27 23:43:22,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2019-11-27 23:43:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:22,070 INFO L225 Difference]: With dead ends: 60 [2019-11-27 23:43:22,071 INFO L226 Difference]: Without dead ends: 51 [2019-11-27 23:43:22,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2019-11-27 23:43:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-27 23:43:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-27 23:43:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-27 23:43:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2019-11-27 23:43:22,080 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2019-11-27 23:43:22,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:22,080 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2019-11-27 23:43:22,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-27 23:43:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2019-11-27 23:43:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-27 23:43:22,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:22,082 INFO L410 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] [2019-11-27 23:43:22,297 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:43:22,297 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:22,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:22,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2019-11-27 23:43:22,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:22,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510651084] [2019-11-27 23:43:22,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:43:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:22,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:43:22,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:22,446 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:43:22,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510651084] [2019-11-27 23:43:22,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:22,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-27 23:43:22,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233147940] [2019-11-27 23:43:22,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:43:22,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:22,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:43:22,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:43:22,522 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 8 states. [2019-11-27 23:43:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:22,916 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2019-11-27 23:43:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:43:22,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-27 23:43:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:22,919 INFO L225 Difference]: With dead ends: 87 [2019-11-27 23:43:22,919 INFO L226 Difference]: Without dead ends: 52 [2019-11-27 23:43:22,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:43:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-27 23:43:22,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-27 23:43:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-27 23:43:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-11-27 23:43:22,929 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2019-11-27 23:43:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:22,930 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-11-27 23:43:22,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:43:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-11-27 23:43:22,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-27 23:43:22,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:22,931 INFO L410 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] [2019-11-27 23:43:23,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:43:23,133 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:23,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:23,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2019-11-27 23:43:23,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:23,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358589067] [2019-11-27 23:43:23,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:43:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:23,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-27 23:43:23,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 23:43:23,288 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 23:43:23,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358589067] [2019-11-27 23:43:23,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:23,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 23:43:23,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609797592] [2019-11-27 23:43:23,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:43:23,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:23,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:43:23,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:43:23,317 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2019-11-27 23:43:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:23,393 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2019-11-27 23:43:23,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:43:23,395 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-27 23:43:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:23,396 INFO L225 Difference]: With dead ends: 84 [2019-11-27 23:43:23,397 INFO L226 Difference]: Without dead ends: 55 [2019-11-27 23:43:23,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:43:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-27 23:43:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-27 23:43:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-27 23:43:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2019-11-27 23:43:23,415 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2019-11-27 23:43:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:23,416 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2019-11-27 23:43:23,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:43:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2019-11-27 23:43:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-27 23:43:23,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:23,419 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-27 23:43:23,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:43:23,635 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:23,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:23,636 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2019-11-27 23:43:23,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:23,638 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213089177] [2019-11-27 23:43:23,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:43:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:23,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-27 23:43:23,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 23:43:23,778 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-27 23:43:23,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213089177] [2019-11-27 23:43:23,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:43:23,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-27 23:43:23,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807631931] [2019-11-27 23:43:23,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:43:23,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:43:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:43:23,832 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand 8 states. [2019-11-27 23:43:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:24,009 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2019-11-27 23:43:24,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-27 23:43:24,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-11-27 23:43:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:24,012 INFO L225 Difference]: With dead ends: 96 [2019-11-27 23:43:24,012 INFO L226 Difference]: Without dead ends: 67 [2019-11-27 23:43:24,015 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:43:24,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-27 23:43:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-11-27 23:43:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-27 23:43:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2019-11-27 23:43:24,036 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 38 [2019-11-27 23:43:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:24,038 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2019-11-27 23:43:24,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:43:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2019-11-27 23:43:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-27 23:43:24,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:24,043 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:43:24,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-27 23:43:24,257 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1788073277, now seen corresponding path program 2 times [2019-11-27 23:43:24,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:24,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199929484] [2019-11-27 23:43:24,261 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-27 23:43:24,393 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-27 23:43:24,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:43:24,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:43:24,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-27 23:43:24,453 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-27 23:43:24,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199929484] [2019-11-27 23:43:24,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:24,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:43:24,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11838438] [2019-11-27 23:43:24,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:43:24,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:24,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:43:24,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:43:24,492 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2019-11-27 23:43:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:24,614 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2019-11-27 23:43:24,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:43:24,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2019-11-27 23:43:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:24,616 INFO L225 Difference]: With dead ends: 96 [2019-11-27 23:43:24,616 INFO L226 Difference]: Without dead ends: 75 [2019-11-27 23:43:24,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:43:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-27 23:43:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-11-27 23:43:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-27 23:43:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2019-11-27 23:43:24,625 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 50 [2019-11-27 23:43:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:24,626 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2019-11-27 23:43:24,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:43:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2019-11-27 23:43:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-27 23:43:24,627 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:24,627 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2019-11-27 23:43:24,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-27 23:43:24,842 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:24,842 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 1 times [2019-11-27 23:43:24,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:24,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842710812] [2019-11-27 23:43:24,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:43:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:43:24,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:43:24,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-27 23:43:25,066 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-27 23:43:25,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842710812] [2019-11-27 23:43:25,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:43:25,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-27 23:43:25,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808503525] [2019-11-27 23:43:25,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-27 23:43:25,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:25,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-27 23:43:25,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:43:25,190 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 16 states. [2019-11-27 23:43:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:25,549 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2019-11-27 23:43:25,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-27 23:43:25,549 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2019-11-27 23:43:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:25,550 INFO L225 Difference]: With dead ends: 136 [2019-11-27 23:43:25,551 INFO L226 Difference]: Without dead ends: 99 [2019-11-27 23:43:25,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:43:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-27 23:43:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2019-11-27 23:43:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-27 23:43:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2019-11-27 23:43:25,561 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 56 [2019-11-27 23:43:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:25,562 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2019-11-27 23:43:25,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-27 23:43:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2019-11-27 23:43:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-27 23:43:25,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:43:25,563 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 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] [2019-11-27 23:43:25,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-27 23:43:25,777 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:43:25,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:43:25,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 2 times [2019-11-27 23:43:25,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:43:25,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744685431] [2019-11-27 23:43:25,780 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-27 23:43:25,897 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-27 23:43:25,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:43:25,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-27 23:43:25,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:43:25,973 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2019-11-27 23:43:25,988 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-27 23:43:25,993 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2019-11-27 23:43:25,994 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,021 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,032 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2019-11-27 23:43:26,033 INFO L508 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,049 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,058 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,059 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2019-11-27 23:43:26,059 INFO L508 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,069 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,069 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,088 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,089 INFO L508 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 23:43:26,089 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:32 [2019-11-27 23:43:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2019-11-27 23:43:26,155 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:43:26,237 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,238 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 68 [2019-11-27 23:43:26,294 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,294 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 56 treesize of output 71 [2019-11-27 23:43:26,299 INFO L508 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,335 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,348 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2019-11-27 23:43:26,349 INFO L508 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,375 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,384 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,385 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2019-11-27 23:43:26,386 INFO L508 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,398 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,399 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:43:26,416 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:43:26,417 INFO L508 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 23:43:26,417 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:33 [2019-11-27 23:43:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2019-11-27 23:43:26,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744685431] [2019-11-27 23:43:26,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:43:26,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:43:26,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8980084] [2019-11-27 23:43:26,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:43:26,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:43:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:43:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:43:26,463 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand 6 states. [2019-11-27 23:43:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:43:26,514 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2019-11-27 23:43:26,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:43:26,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-11-27 23:43:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:43:26,517 INFO L225 Difference]: With dead ends: 99 [2019-11-27 23:43:26,517 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:43:26,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:43:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:43:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:43:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:43:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:43:26,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2019-11-27 23:43:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:43:26,519 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:43:26,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:43:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:43:26,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:43:26,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-11-27 23:43:26,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:43:26,875 INFO L242 CegarLoopResult]: At program point L126(lines 19 127) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-27 23:43:26,875 INFO L246 CegarLoopResult]: For program point L85(lines 85 94) no Hoare annotation was computed. [2019-11-27 23:43:26,875 INFO L246 CegarLoopResult]: For program point L85-2(lines 85 94) no Hoare annotation was computed. [2019-11-27 23:43:26,875 INFO L246 CegarLoopResult]: For program point L44(lines 44 55) no Hoare annotation was computed. [2019-11-27 23:43:26,875 INFO L246 CegarLoopResult]: For program point L44-2(lines 44 55) no Hoare annotation was computed. [2019-11-27 23:43:26,875 INFO L246 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2019-11-27 23:43:26,875 INFO L246 CegarLoopResult]: For program point L36(lines 36 41) no Hoare annotation was computed. [2019-11-27 23:43:26,876 INFO L242 CegarLoopResult]: At program point L69-2(lines 69 79) the Hoare annotation is: false [2019-11-27 23:43:26,876 INFO L246 CegarLoopResult]: For program point L36-2(lines 36 41) no Hoare annotation was computed. [2019-11-27 23:43:26,876 INFO L246 CegarLoopResult]: For program point L69-3(lines 69 79) no Hoare annotation was computed. [2019-11-27 23:43:26,876 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:43:26,876 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:43:26,876 INFO L242 CegarLoopResult]: At program point L45-2(lines 45 49) the Hoare annotation is: false [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L45-3(lines 45 49) no Hoare annotation was computed. [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L37(lines 37 40) no Hoare annotation was computed. [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L87(lines 87 88) no Hoare annotation was computed. [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L120-1(lines 120 125) no Hoare annotation was computed. [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L153-2(lines 153 156) no Hoare annotation was computed. [2019-11-27 23:43:26,877 INFO L242 CegarLoopResult]: At program point L120-2(lines 120 125) the Hoare annotation is: false [2019-11-27 23:43:26,877 INFO L246 CegarLoopResult]: For program point L87-2(lines 87 88) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L120-3(lines 120 125) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L104(lines 104 112) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L71(lines 71 75) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L71-2(lines 71 75) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L242 CegarLoopResult]: At program point L138(lines 129 139) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)) (= ULTIMATE.start___signbit_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= ULTIMATE.start_main_~res~0 (_ +zero 11 53)) |ULTIMATE.start_main_#t~short11| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2019-11-27 23:43:26,878 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L246 CegarLoopResult]: For program point L90(lines 90 91) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L246 CegarLoopResult]: For program point L90-2(lines 90 91) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L242 CegarLoopResult]: At program point L82-2(lines 82 98) the Hoare annotation is: false [2019-11-27 23:43:26,879 INFO L246 CegarLoopResult]: For program point L82-3(lines 19 127) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L246 CegarLoopResult]: For program point L107(lines 107 112) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L246 CegarLoopResult]: For program point L132-1(lines 132 136) no Hoare annotation was computed. [2019-11-27 23:43:26,879 INFO L242 CegarLoopResult]: At program point L132-2(lines 132 136) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= ULTIMATE.start_main_~res~0 (_ +zero 11 53)) |ULTIMATE.start_main_#t~short11| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point L132-3(lines 132 136) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point L25-1(lines 25 30) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point L58-2(lines 58 61) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L242 CegarLoopResult]: At program point L25-2(lines 25 30) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (_ bv0 32)) (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x)) [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point L25-3(lines 19 127) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L246 CegarLoopResult]: For program point L50-2(lines 50 51) no Hoare annotation was computed. [2019-11-27 23:43:26,880 INFO L242 CegarLoopResult]: At program point L50-3(lines 50 51) the Hoare annotation is: false [2019-11-27 23:43:26,881 INFO L246 CegarLoopResult]: For program point L50-4(lines 50 51) no Hoare annotation was computed. [2019-11-27 23:43:26,881 INFO L246 CegarLoopResult]: For program point L108(lines 108 109) no Hoare annotation was computed. [2019-11-27 23:43:26,881 INFO L246 CegarLoopResult]: For program point L108-2(lines 108 109) no Hoare annotation was computed. [2019-11-27 23:43:26,881 INFO L246 CegarLoopResult]: For program point L100(lines 100 114) no Hoare annotation was computed. [2019-11-27 23:43:26,881 INFO L249 CegarLoopResult]: At program point L158(lines 141 159) the Hoare annotation is: true [2019-11-27 23:43:26,881 INFO L246 CegarLoopResult]: For program point L117(lines 117 118) no Hoare annotation was computed. [2019-11-27 23:43:26,881 INFO L246 CegarLoopResult]: For program point L117-2(lines 117 118) no Hoare annotation was computed. [2019-11-27 23:43:26,891 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,892 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,893 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,899 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,900 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:26,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:43:26 BoogieIcfgContainer [2019-11-27 23:43:26,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:43:26,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:43:26,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:43:26,905 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:43:26,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:43:17" (3/4) ... [2019-11-27 23:43:26,910 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:43:26,923 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-27 23:43:26,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-27 23:43:26,924 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:43:26,955 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && \result == ~Pluszero~LONGDOUBLE() [2019-11-27 23:43:26,956 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == x && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() [2019-11-27 23:43:26,957 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_q#valueAsBitvector_6[63:32]) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() [2019-11-27 23:43:27,001 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:43:27,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:43:27,003 INFO L168 Benchmark]: Toolchain (without parser) took 12943.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -46.3 MB). Peak memory consumption was 162.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:27,003 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:43:27,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:27,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:43:27,004 INFO L168 Benchmark]: Boogie Preprocessor took 54.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:27,005 INFO L168 Benchmark]: RCFGBuilder took 2851.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:27,005 INFO L168 Benchmark]: TraceAbstraction took 9368.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 146.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:27,006 INFO L168 Benchmark]: Witness Printer took 96.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:43:27,008 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 505.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2851.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9368.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 146.4 MB. Max. memory is 11.5 GB. * Witness Printer took 96.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 154]: 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: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 129]: Loop Invariant [2019-11-27 23:43:27,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,023 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,024 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,024 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-27 23:43:27,024 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_q#valueAsBitvector_6[63:32]) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 120]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ~bvadd64(sign, 2147483648bv32) == 0bv32 && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == x && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 9.1s, OverallIterations: 10, TraceHistogramMax: 14, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 545 SDtfs, 695 SDslu, 1361 SDs, 0 SdLazy, 499 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 68 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 326 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 632 ConstructedInterpolants, 26 QuantifiedInterpolants, 82481 SizeOfPredicates, 39 NumberOfNonLiveVariables, 716 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 706/818 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...