./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1250.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_1250.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 01b6390e563edc58f3f7d1f239b082df891f9006 .............................................................................................................................................................................................................................................................................................................................................................. 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_1250.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 01b6390e563edc58f3f7d1f239b082df891f9006 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:45:40,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:45:40,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:45:40,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:45:40,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:45:40,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:45:40,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:45:40,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:45:40,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:45:40,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:45:40,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:45:40,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:45:40,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:45:40,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:45:40,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:45:40,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:45:40,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:45:40,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:45:40,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:45:40,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:45:40,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:45:40,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:45:40,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:45:40,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:45:40,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:45:40,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:45:40,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:45:40,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:45:40,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:45:40,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:45:40,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:40,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:40,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:40,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:40,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:40,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:40,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:40,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:40,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:40,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:40,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:40,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:45:40,236 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:40,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:40,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:40,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:40,243 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:40,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:40,243 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:40,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:45:40,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:40,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:40,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:40,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:40,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:40,245 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:40,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:40,245 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:40,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:40,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:40,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:40,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:40,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:40,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:40,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:40,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:40,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:40,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:45:40,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:45:40,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:40,248 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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2019-11-27 23:45:40,548 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:40,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:40,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:40,575 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:40,575 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:40,577 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-27 23:45:40,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16342cb6/5c067d6a390f4a2a88c61ba3822ee191/FLAG98536383d [2019-11-27 23:45:41,098 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:41,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-27 23:45:41,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16342cb6/5c067d6a390f4a2a88c61ba3822ee191/FLAG98536383d [2019-11-27 23:45:41,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f16342cb6/5c067d6a390f4a2a88c61ba3822ee191 [2019-11-27 23:45:41,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:41,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:41,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:41,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:41,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:41,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e319661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41, skipping insertion in model container [2019-11-27 23:45:41,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:41,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:41,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:41,768 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:41,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:41,873 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:41,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41 WrapperNode [2019-11-27 23:45:41,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:41,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:41,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:41,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:41,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:41,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:41,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:41,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:41,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (1/1) ... [2019-11-27 23:45:41,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:41,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:41,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:41,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:41,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (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 23:45:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:45:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:42,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:45:42,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:42,398 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:42,399 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:45:42,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:42 BoogieIcfgContainer [2019-11-27 23:45:42,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:42,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:42,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:42,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:42,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:41" (1/3) ... [2019-11-27 23:45:42,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec106f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:42, skipping insertion in model container [2019-11-27 23:45:42,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:41" (2/3) ... [2019-11-27 23:45:42,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec106f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:42, skipping insertion in model container [2019-11-27 23:45:42,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:42" (3/3) ... [2019-11-27 23:45:42,407 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2019-11-27 23:45:42,418 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:42,424 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:42,434 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:42,454 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:42,455 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:42,455 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:42,455 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:42,455 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:42,455 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:42,455 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:42,456 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:45:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:42,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:42,478 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:42,478 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:42,484 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:45:42,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:42,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554579678] [2019-11-27 23:45:42,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:42,598 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 23:45:42,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554579678] [2019-11-27 23:45:42,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:42,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:45:42,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439536857] [2019-11-27 23:45:42,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:42,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:42,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:42,623 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:45:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:42,644 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:45:42,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:42,646 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:42,656 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:45:42,657 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:45:42,660 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 23:45:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:45:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:45:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:45:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:45:42,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:45:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:42,696 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:45:42,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:45:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:42,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:42,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:42,698 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:42,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:42,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:45:42,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:42,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398421813] [2019-11-27 23:45:42,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:42,805 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 23:45:42,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398421813] [2019-11-27 23:45:42,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:42,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:42,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642092435] [2019-11-27 23:45:42,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:42,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:42,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:42,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:42,810 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-27 23:45:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:42,876 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-27 23:45:42,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:42,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:45:42,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:42,879 INFO L225 Difference]: With dead ends: 41 [2019-11-27 23:45:42,879 INFO L226 Difference]: Without dead ends: 36 [2019-11-27 23:45:42,880 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:45:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-27 23:45:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-27 23:45:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:45:42,887 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:45:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:42,888 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:45:42,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:45:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:42,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:42,889 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:42,889 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-27 23:45:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:42,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339668978] [2019-11-27 23:45:42,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:42,958 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 23:45:42,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339668978] [2019-11-27 23:45:42,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:42,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:42,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188210213] [2019-11-27 23:45:42,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:42,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:42,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:42,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:42,961 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-27 23:45:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:43,052 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-27 23:45:43,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:43,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:45:43,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:43,053 INFO L225 Difference]: With dead ends: 43 [2019-11-27 23:45:43,054 INFO L226 Difference]: Without dead ends: 38 [2019-11-27 23:45:43,054 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:45:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-27 23:45:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-27 23:45:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:45:43,060 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-27 23:45:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:43,061 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:45:43,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:45:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:43,062 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:43,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:43,062 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:45:43,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:43,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30083903] [2019-11-27 23:45:43,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:43,163 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:45:43,163 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:45:43,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:43 BoogieIcfgContainer [2019-11-27 23:45:43,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:43,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:43,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:43,209 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:43,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:42" (3/4) ... [2019-11-27 23:45:43,214 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:45:43,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:43,217 INFO L168 Benchmark]: Toolchain (without parser) took 1693.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -100.0 MB). Peak memory consumption was 43.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:43,217 INFO L168 Benchmark]: CDTParser took 0.29 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 23:45:43,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:43,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:43,220 INFO L168 Benchmark]: Boogie Preprocessor took 30.53 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:43,221 INFO L168 Benchmark]: RCFGBuilder took 452.64 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:43,222 INFO L168 Benchmark]: TraceAbstraction took 807.63 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:43,222 INFO L168 Benchmark]: Witness Printer took 5.39 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 23:45:43,227 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 351.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.53 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 452.64 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 807.63 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L69] double res = fmax_double(x, y); [L16] return x != x; [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 23:45:45,257 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:45:45,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:45,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:45,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:45,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:45,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:45,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:45,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:45,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:45,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:45,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:45,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:45,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:45:45,346 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:45,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:45,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:45,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:45,348 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:45,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:45,348 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:45,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:45,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:45,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:45,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:45,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:45,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:45:45,350 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:45:45,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:45,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:45,351 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:45,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:45,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:45,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:45,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:45,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:45,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:45,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:45,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:45,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:45,353 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:45:45,353 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:45:45,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:45,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:45:45,354 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 -> 01b6390e563edc58f3f7d1f239b082df891f9006 [2019-11-27 23:45:45,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:45,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:45,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:45,689 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:45,690 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:45,691 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-27 23:45:45,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b856ab8ed/85f46ab335c748b38fd2f3b7fe153681/FLAG7b17f1334 [2019-11-27 23:45:46,233 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:46,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2019-11-27 23:45:46,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b856ab8ed/85f46ab335c748b38fd2f3b7fe153681/FLAG7b17f1334 [2019-11-27 23:45:46,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b856ab8ed/85f46ab335c748b38fd2f3b7fe153681 [2019-11-27 23:45:46,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:46,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:46,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:46,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:46,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:46,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:46" (1/1) ... [2019-11-27 23:45:46,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6eb3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:46, skipping insertion in model container [2019-11-27 23:45:46,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:46" (1/1) ... [2019-11-27 23:45:46,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:46,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:46,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:46,898 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:46,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:47,016 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:47,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47 WrapperNode [2019-11-27 23:45:47,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:47,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:47,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:47,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:47,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:47,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:47,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:47,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:47,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (1/1) ... [2019-11-27 23:45:47,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:47,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:47,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:47,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:47,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (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 23:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-27 23:45:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:45:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:47,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:47,650 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:47,650 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:45:47,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:47 BoogieIcfgContainer [2019-11-27 23:45:47,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:47,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:47,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:47,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:47,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:46" (1/3) ... [2019-11-27 23:45:47,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea800bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:47, skipping insertion in model container [2019-11-27 23:45:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:47" (2/3) ... [2019-11-27 23:45:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea800bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:47, skipping insertion in model container [2019-11-27 23:45:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:47" (3/3) ... [2019-11-27 23:45:47,660 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2019-11-27 23:45:47,670 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:47,679 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:47,692 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:47,714 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:47,715 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:47,715 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:47,715 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:47,715 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:47,716 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:47,716 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:47,716 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:47,729 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:45:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:47,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:47,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:47,735 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:45:47,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:47,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906721868] [2019-11-27 23:45:47,752 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 23:45:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:47,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:45:47,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:47,912 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 23:45:47,912 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:47,916 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 23:45:47,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906721868] [2019-11-27 23:45:47,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:47,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:45:47,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253246024] [2019-11-27 23:45:47,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:47,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:47,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:47,941 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:45:47,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:47,962 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:45:47,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:47,963 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:47,973 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:45:47,974 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:45:47,977 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 23:45:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:45:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:45:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:45:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:45:48,013 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:45:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:48,013 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:45:48,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:45:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:48,014 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:48,014 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:48,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:45:48,228 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:45:48,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:48,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314673723] [2019-11-27 23:45:48,232 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 23:45:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:48,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:48,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:48,376 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 23:45:48,376 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:48,401 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 23:45:48,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314673723] [2019-11-27 23:45:48,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:48,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:48,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935807649] [2019-11-27 23:45:48,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:48,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:48,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:48,405 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-27 23:45:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:48,547 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-27 23:45:48,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:48,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:45:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:48,549 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:45:48,549 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:45:48,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:45:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:45:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:45:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:45:48,558 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:45:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:48,558 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:45:48,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:45:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:48,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:48,560 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:48,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:45:48,774 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:45:48,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:48,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343214647] [2019-11-27 23:45:48,777 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 23:45:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:48,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:45:48,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:48,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:49,013 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 23:45:49,014 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:49,129 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 23:45:49,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343214647] [2019-11-27 23:45:49,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:49,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:45:49,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653323201] [2019-11-27 23:45:49,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:45:49,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:49,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:45:49,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:45:49,132 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-27 23:45:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:49,533 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-27 23:45:49,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:49,534 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-27 23:45:49,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:49,535 INFO L225 Difference]: With dead ends: 36 [2019-11-27 23:45:49,535 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 23:45:49,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:45:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 23:45:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-27 23:45:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:45:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-27 23:45:49,541 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-27 23:45:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:49,541 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-27 23:45:49,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:45:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-27 23:45:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:45:49,542 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:49,543 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:49,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:45:49,744 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:49,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-27 23:45:49,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:49,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940419391] [2019-11-27 23:45:49,745 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 23:45:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:49,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:49,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:49,887 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 23:45:49,887 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:49,907 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 23:45:49,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940419391] [2019-11-27 23:45:49,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:49,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:49,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277640224] [2019-11-27 23:45:49,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:49,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:49,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:49,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:49,910 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-27 23:45:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:50,030 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-27 23:45:50,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:50,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:45:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:50,034 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:45:50,034 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:45:50,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:45:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:45:50,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:45:50,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-27 23:45:50,040 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-27 23:45:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:50,041 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-27 23:45:50,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-27 23:45:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:45:50,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:50,042 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:50,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:45:50,248 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:50,249 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-27 23:45:50,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:50,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394434164] [2019-11-27 23:45:50,250 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 23:45:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:50,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-27 23:45:50,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:50,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:50,522 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 23:45:50,522 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:50,684 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 23:45:50,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394434164] [2019-11-27 23:45:50,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:50,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-27 23:45:50,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438017062] [2019-11-27 23:45:50,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-27 23:45:50,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:50,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-27 23:45:50,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:45:50,688 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-27 23:45:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:51,198 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-27 23:45:51,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:45:51,199 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-27 23:45:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:51,199 INFO L225 Difference]: With dead ends: 32 [2019-11-27 23:45:51,200 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:45:51,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:45:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:45:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-27 23:45:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 23:45:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-27 23:45:51,205 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-27 23:45:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:51,206 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-27 23:45:51,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-27 23:45:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-27 23:45:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:45:51,207 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:51,208 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:51,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:45:51,419 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-27 23:45:51,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:51,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65553183] [2019-11-27 23:45:51,420 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 23:45:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:51,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:45:51,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:51,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:51,662 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 23:45:51,662 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:51,743 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 23:45:51,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65553183] [2019-11-27 23:45:51,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:51,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:45:51,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247637194] [2019-11-27 23:45:51,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:45:51,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:51,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:45:51,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:45:51,746 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-27 23:45:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:51,991 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-27 23:45:51,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:51,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-27 23:45:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:51,992 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:45:51,992 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:45:51,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:45:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:45:51,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:45:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:45:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:45:51,994 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-27 23:45:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:51,994 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:45:51,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:45:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:45:51,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:45:52,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:45:52,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:45:52,502 INFO L246 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2019-11-27 23:45:52,503 INFO L246 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2019-11-27 23:45:52,503 INFO L242 CegarLoopResult]: At program point L60-3(lines 53 61) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2019-11-27 23:45:52,503 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:45:52,503 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:45:52,503 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:45:52,504 INFO L246 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2019-11-27 23:45:52,504 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2019-11-27 23:45:52,504 INFO L242 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmax_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2019-11-27 23:45:52,504 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:45:52,504 INFO L246 CegarLoopResult]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2019-11-27 23:45:52,504 INFO L242 CegarLoopResult]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-11-27 23:45:52,504 INFO L246 CegarLoopResult]: For program point L29-3(lines 26 51) no Hoare annotation was computed. [2019-11-27 23:45:52,505 INFO L246 CegarLoopResult]: For program point L29-5(lines 29 34) no Hoare annotation was computed. [2019-11-27 23:45:52,505 INFO L242 CegarLoopResult]: At program point L29-6(lines 29 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-11-27 23:45:52,505 INFO L246 CegarLoopResult]: For program point L29-7(lines 26 51) no Hoare annotation was computed. [2019-11-27 23:45:52,505 INFO L242 CegarLoopResult]: At program point L50(lines 26 51) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2019-11-27 23:45:52,505 INFO L242 CegarLoopResult]: At program point L50-1(lines 26 51) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))))) [2019-11-27 23:45:52,505 INFO L246 CegarLoopResult]: For program point L46(lines 46 50) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L46-1(lines 46 50) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L249 CegarLoopResult]: At program point L75(lines 63 76) the Hoare annotation is: true [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L42(lines 42 50) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L42-1(lines 42 50) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2019-11-27 23:45:52,506 INFO L246 CegarLoopResult]: For program point L39(lines 39 50) no Hoare annotation was computed. [2019-11-27 23:45:52,507 INFO L246 CegarLoopResult]: For program point L39-1(lines 39 50) no Hoare annotation was computed. [2019-11-27 23:45:52,513 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:52,521 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:52,525 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:52,525 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:52,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:52 BoogieIcfgContainer [2019-11-27 23:45:52,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:52,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:52,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:52,529 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:52,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:47" (3/4) ... [2019-11-27 23:45:52,533 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:45:52,546 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-27 23:45:52,547 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-27 23:45:52,547 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:45:52,574 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-27 23:45:52,575 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result [2019-11-27 23:45:52,575 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2019-11-27 23:45:52,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:45:52,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:52,617 INFO L168 Benchmark]: Toolchain (without parser) took 6026.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.3 MB in the beginning and 873.0 MB in the end (delta: 83.4 MB). Peak memory consumption was 211.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:52,617 INFO L168 Benchmark]: CDTParser took 0.34 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 23:45:52,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:52,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.14 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:52,619 INFO L168 Benchmark]: Boogie Preprocessor took 38.51 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 23:45:52,620 INFO L168 Benchmark]: RCFGBuilder took 532.96 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:52,620 INFO L168 Benchmark]: TraceAbstraction took 4874.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 879.7 MB in the end (delta: 211.1 MB). Peak memory consumption was 211.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:52,621 INFO L168 Benchmark]: Witness Printer took 86.28 ms. Allocated memory is still 1.2 GB. Free memory was 879.7 MB in the beginning and 873.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:52,624 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 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 425.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.14 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.51 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. * RCFGBuilder took 532.96 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4874.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 879.7 MB in the end (delta: 211.1 MB). Peak memory consumption was 211.1 MB. Max. memory is 11.5 GB. * Witness Printer took 86.28 ms. Allocated memory is still 1.2 GB. Free memory was 879.7 MB in the beginning and 873.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 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[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: 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: 16]: Loop Invariant [2019-11-27 23:45:52,632 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:52,632 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (!~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 53]: Loop Invariant [2019-11-27 23:45:52,635 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:52,635 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~DOUBLE(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8512 SizeOfPredicates, 32 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 proved your program to be correct! Received shutdown request...