./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1232b.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_1232b.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 064927d7c1e3d8158c8524deee46f65d988c7936 .............................................................................................................................................................................................................................................................................................................................................................. 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_1232b.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 064927d7c1e3d8158c8524deee46f65d988c7936 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:45:33,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:45:33,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:45:33,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:45:33,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:45:33,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:45:33,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:45:33,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:45:33,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:45:33,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:45:33,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:45:33,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:45:33,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:45:33,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:45:33,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:45:33,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:45:33,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:45:33,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:45:33,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:45:33,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:45:33,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:45:33,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:45:33,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:45:33,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:45:33,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:45:33,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:45:33,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:45:33,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:45:33,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:45:33,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:45:33,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:33,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:33,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:33,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:33,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:33,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:33,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:33,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:33,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:33,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:33,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:33,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:45:33,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:33,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:33,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:33,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:33,283 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:33,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:33,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:33,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:45:33,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:33,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:33,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:33,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:33,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:33,288 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:33,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:33,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:33,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:33,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:33,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:33,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:33,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:33,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:33,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:33,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:33,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:33,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:45:33,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:45:33,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:33,292 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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-27 23:45:33,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:33,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:33,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:33,631 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:33,632 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:33,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-27 23:45:33,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9e9d09e/a6a84af10294496089fedea0cac95273/FLAGfc6813bfd [2019-11-27 23:45:34,177 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:34,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-27 23:45:34,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9e9d09e/a6a84af10294496089fedea0cac95273/FLAGfc6813bfd [2019-11-27 23:45:34,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9e9d09e/a6a84af10294496089fedea0cac95273 [2019-11-27 23:45:34,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:34,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:34,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:34,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:34,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:34,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:34,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a6e3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34, skipping insertion in model container [2019-11-27 23:45:34,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:34,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:34,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:34,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:34,839 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:34,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:34,956 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:34,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34 WrapperNode [2019-11-27 23:45:34,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:34,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:34,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:34,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:34,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:34,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:35,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:35,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:35,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:35,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (1/1) ... [2019-11-27 23:45:35,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:35,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:35,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:35,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:35,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (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 23:45:35,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:45:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:35,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:35,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:45:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:35,517 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:35,518 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:45:35,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:35 BoogieIcfgContainer [2019-11-27 23:45:35,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:35,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:35,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:35,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:35,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:34" (1/3) ... [2019-11-27 23:45:35,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73707d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:35, skipping insertion in model container [2019-11-27 23:45:35,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:34" (2/3) ... [2019-11-27 23:45:35,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73707d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:35, skipping insertion in model container [2019-11-27 23:45:35,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:35" (3/3) ... [2019-11-27 23:45:35,550 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-27 23:45:35,569 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:35,579 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:35,589 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:35,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:35,611 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:35,612 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:35,612 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:35,612 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:35,612 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:35,612 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:35,613 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-27 23:45:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:35,633 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:35,634 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:35,635 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-27 23:45:35,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:35,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609326718] [2019-11-27 23:45:35,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:35,773 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 23:45:35,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609326718] [2019-11-27 23:45:35,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:35,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:45:35,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034317318] [2019-11-27 23:45:35,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:35,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:35,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:35,796 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-27 23:45:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:35,817 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-27 23:45:35,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:35,819 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:35,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:35,830 INFO L225 Difference]: With dead ends: 62 [2019-11-27 23:45:35,831 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:45:35,834 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 23:45:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:45:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:45:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:45:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-27 23:45:35,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-27 23:45:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:35,874 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-27 23:45:35,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-27 23:45:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:35,875 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:35,875 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:35,876 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:35,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-27 23:45:35,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:35,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748232064] [2019-11-27 23:45:35,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:35,985 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 23:45:35,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748232064] [2019-11-27 23:45:35,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:35,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:35,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236811250] [2019-11-27 23:45:35,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:35,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:35,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:35,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:35,988 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-27 23:45:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:36,084 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-27 23:45:36,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:36,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:45:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:36,088 INFO L225 Difference]: With dead ends: 53 [2019-11-27 23:45:36,089 INFO L226 Difference]: Without dead ends: 44 [2019-11-27 23:45:36,090 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 23:45:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-27 23:45:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-27 23:45:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:45:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:45:36,104 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-27 23:45:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:36,106 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:45:36,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:45:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:36,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:36,108 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:36,108 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:36,108 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-27 23:45:36,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:36,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166252796] [2019-11-27 23:45:36,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:36,203 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 23:45:36,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166252796] [2019-11-27 23:45:36,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:36,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:36,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881333950] [2019-11-27 23:45:36,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:36,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:36,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:36,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:36,206 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-27 23:45:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:36,280 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-27 23:45:36,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:36,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:45:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:36,283 INFO L225 Difference]: With dead ends: 55 [2019-11-27 23:45:36,283 INFO L226 Difference]: Without dead ends: 46 [2019-11-27 23:45:36,285 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 23:45:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-27 23:45:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-27 23:45:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:45:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:45:36,298 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-27 23:45:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:36,300 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:45:36,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:45:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:36,303 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:36,303 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:36,303 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:36,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-27 23:45:36,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:36,305 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975551857] [2019-11-27 23:45:36,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:36,408 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:45:36,409 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:45:36,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:36 BoogieIcfgContainer [2019-11-27 23:45:36,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:36,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:36,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:36,456 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:36,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:35" (3/4) ... [2019-11-27 23:45:36,461 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:45:36,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:36,465 INFO L168 Benchmark]: Toolchain (without parser) took 1866.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -92.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:36,467 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:36,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:36,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.05 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 23:45:36,472 INFO L168 Benchmark]: Boogie Preprocessor took 39.25 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 23:45:36,473 INFO L168 Benchmark]: RCFGBuilder took 480.47 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:36,480 INFO L168 Benchmark]: TraceAbstraction took 923.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:36,481 INFO L168 Benchmark]: Witness Printer took 6.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:36,492 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.05 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 39.25 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 480.47 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 923.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 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=32occurred 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, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s 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 23:45:38,545 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:45:38,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:38,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:38,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:38,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:38,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:38,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:38,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:38,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:38,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:38,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:38,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:38,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:45:38,644 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:38,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:38,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:38,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:38,647 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:38,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:38,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:38,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:38,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:38,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:38,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:38,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:38,650 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:45:38,650 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:45:38,650 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:38,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:38,651 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:38,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:38,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:38,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:38,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:38,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:38,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:38,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:38,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:38,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:38,654 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:45:38,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:45:38,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:38,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:45:38,655 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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2019-11-27 23:45:38,989 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:39,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:39,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:39,009 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:39,009 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:39,010 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-27 23:45:39,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c6d4da0/703806855db14223ba6e9272923c5bf1/FLAGcec20b214 [2019-11-27 23:45:39,578 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:39,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2019-11-27 23:45:39,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c6d4da0/703806855db14223ba6e9272923c5bf1/FLAGcec20b214 [2019-11-27 23:45:39,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c6d4da0/703806855db14223ba6e9272923c5bf1 [2019-11-27 23:45:39,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:39,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:39,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:39,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:39,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:39,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:39" (1/1) ... [2019-11-27 23:45:39,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381b270f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:39, skipping insertion in model container [2019-11-27 23:45:39,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:39" (1/1) ... [2019-11-27 23:45:39,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:39,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:40,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:40,240 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:40,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:40,379 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:40,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40 WrapperNode [2019-11-27 23:45:40,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:40,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:40,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:40,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:40,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:40,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:40,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:40,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:40,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (1/1) ... [2019-11-27 23:45:40,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:40,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:40,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:40,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:40,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (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 23:45:40,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-27 23:45:40,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:45:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:40,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:41,035 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:41,035 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:45:41,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:41 BoogieIcfgContainer [2019-11-27 23:45:41,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:41,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:41,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:41,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:41,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:39" (1/3) ... [2019-11-27 23:45:41,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40794276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:41, skipping insertion in model container [2019-11-27 23:45:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:40" (2/3) ... [2019-11-27 23:45:41,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40794276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:41, skipping insertion in model container [2019-11-27 23:45:41,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:41" (3/3) ... [2019-11-27 23:45:41,045 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2019-11-27 23:45:41,053 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:41,059 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:41,070 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:41,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:41,098 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:41,098 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:41,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:41,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:41,099 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:41,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:41,099 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-27 23:45:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:41,120 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:41,120 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:41,121 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-27 23:45:41,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:41,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355448299] [2019-11-27 23:45:41,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 23:45:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:41,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:45:41,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:41,263 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 23:45:41,264 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:41,270 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 23:45:41,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355448299] [2019-11-27 23:45:41,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:41,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:45:41,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188684165] [2019-11-27 23:45:41,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:41,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:41,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:41,299 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-27 23:45:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:41,324 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-27 23:45:41,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:41,326 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:41,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:41,345 INFO L225 Difference]: With dead ends: 62 [2019-11-27 23:45:41,345 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:45:41,352 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 23:45:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:45:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:45:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:45:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-27 23:45:41,391 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-27 23:45:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:41,391 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-27 23:45:41,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:41,392 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-27 23:45:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:41,393 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:41,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:41,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:45:41,608 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:41,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-27 23:45:41,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:41,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878394994] [2019-11-27 23:45:41,612 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 23:45:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:41,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:41,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:41,731 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 23:45:41,732 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:41,757 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 23:45:41,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878394994] [2019-11-27 23:45:41,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:41,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:41,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272439806] [2019-11-27 23:45:41,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:41,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:41,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:41,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:41,762 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-27 23:45:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:42,294 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-27 23:45:42,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:42,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:45:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:42,302 INFO L225 Difference]: With dead ends: 68 [2019-11-27 23:45:42,302 INFO L226 Difference]: Without dead ends: 59 [2019-11-27 23:45:42,306 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 23:45:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-27 23:45:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-27 23:45:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:45:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:45:42,320 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-27 23:45:42,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:42,321 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:45:42,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:45:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:42,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:42,322 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:42,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:45:42,536 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-27 23:45:42,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:42,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579700656] [2019-11-27 23:45:42,540 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 23:45:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:42,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:45:42,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:42,724 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 23:45:42,724 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:42,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:42,827 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 23:45:42,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579700656] [2019-11-27 23:45:42,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:42,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:42,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983767893] [2019-11-27 23:45:42,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:42,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:42,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:42,830 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-27 23:45:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:42,950 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-27 23:45:42,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:42,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-27 23:45:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:42,952 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:45:42,953 INFO L226 Difference]: Without dead ends: 28 [2019-11-27 23:45:42,953 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:45:42,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-27 23:45:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-27 23:45:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 23:45:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-27 23:45:42,960 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-27 23:45:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:42,960 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-27 23:45:42,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-27 23:45:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:45:42,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:42,962 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:43,167 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:45:43,168 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:43,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-27 23:45:43,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:43,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058322205] [2019-11-27 23:45:43,171 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 23:45:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:43,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:43,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:43,326 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 23:45:43,326 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:43,348 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 23:45:43,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058322205] [2019-11-27 23:45:43,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:43,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:43,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103517422] [2019-11-27 23:45:43,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:43,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:43,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:43,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:43,351 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-27 23:45:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:43,543 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-27 23:45:43,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:43,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:45:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:43,546 INFO L225 Difference]: With dead ends: 65 [2019-11-27 23:45:43,547 INFO L226 Difference]: Without dead ends: 56 [2019-11-27 23:45:43,548 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 23:45:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-27 23:45:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-27 23:45:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 23:45:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-27 23:45:43,555 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-27 23:45:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:43,555 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-27 23:45:43,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-27 23:45:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:45:43,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:43,557 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 23:45:43,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:45:43,762 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:43,763 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-27 23:45:43,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:43,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64428610] [2019-11-27 23:45:43,764 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 23:45:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:43,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:45:43,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:43,906 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 23:45:43,907 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:43,955 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 23:45:43,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64428610] [2019-11-27 23:45:43,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:43,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 23:45:43,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716564281] [2019-11-27 23:45:43,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:43,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:43,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:43,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:43,960 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-27 23:45:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:43,975 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-27 23:45:43,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:45:43,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-27 23:45:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:43,976 INFO L225 Difference]: With dead ends: 40 [2019-11-27 23:45:43,977 INFO L226 Difference]: Without dead ends: 30 [2019-11-27 23:45:43,977 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:43,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-27 23:45:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-27 23:45:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 23:45:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-27 23:45:43,983 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-27 23:45:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:43,984 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-27 23:45:43,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-27 23:45:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:45:43,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:43,985 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 23:45:44,199 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:45:44,200 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:44,200 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-27 23:45:44,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:44,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77419774] [2019-11-27 23:45:44,202 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 23:45:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:44,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:45:44,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:44,350 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 23:45:44,351 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:44,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:44,421 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 23:45:44,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77419774] [2019-11-27 23:45:44,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:44,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-27 23:45:44,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614598595] [2019-11-27 23:45:44,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-27 23:45:44,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:44,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-27 23:45:44,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-27 23:45:44,424 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-27 23:45:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:44,577 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-27 23:45:44,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:45:44,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-27 23:45:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:44,579 INFO L225 Difference]: With dead ends: 42 [2019-11-27 23:45:44,579 INFO L226 Difference]: Without dead ends: 39 [2019-11-27 23:45:44,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:45:44,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-27 23:45:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-27 23:45:44,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-27 23:45:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-27 23:45:44,587 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-27 23:45:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:44,588 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-27 23:45:44,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-27 23:45:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-27 23:45:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:45:44,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:44,589 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 23:45:44,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:45:44,802 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:44,803 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-27 23:45:44,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:44,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899029090] [2019-11-27 23:45:44,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-27 23:45:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:44,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:45:44,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:45,012 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 23:45:45,013 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:45,092 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 23:45:45,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899029090] [2019-11-27 23:45:45,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:45,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-27 23:45:45,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255387227] [2019-11-27 23:45:45,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:45:45,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:45,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:45:45,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:45:45,095 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-27 23:45:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:45,224 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-27 23:45:45,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:45:45,225 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-27 23:45:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:45,226 INFO L225 Difference]: With dead ends: 45 [2019-11-27 23:45:45,226 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 23:45:45,227 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:45:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 23:45:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-27 23:45:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-27 23:45:45,232 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-27 23:45:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:45,232 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-27 23:45:45,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:45:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-27 23:45:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-27 23:45:45,233 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:45,233 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:45,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-27 23:45:45,448 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-27 23:45:45,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:45,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978663958] [2019-11-27 23:45:45,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-27 23:45:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:45,803 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:45:45,803 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:45:46,004 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-27 23:45:46,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:46 BoogieIcfgContainer [2019-11-27 23:45:46,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:46,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:46,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:46,040 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:46,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:41" (3/4) ... [2019-11-27 23:45:46,043 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:45:46,103 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:45:46,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:46,106 INFO L168 Benchmark]: Toolchain (without parser) took 6167.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.3 MB in the beginning and 897.3 MB in the end (delta: 59.1 MB). Peak memory consumption was 205.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:46,107 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:46,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:46,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:46,109 INFO L168 Benchmark]: Boogie Preprocessor took 38.75 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 23:45:46,109 INFO L168 Benchmark]: RCFGBuilder took 566.48 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:46,110 INFO L168 Benchmark]: TraceAbstraction took 5001.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.3 MB in the end (delta: 207.0 MB). Peak memory consumption was 207.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:46,111 INFO L168 Benchmark]: Witness Printer took 63.86 ms. Allocated memory is still 1.2 GB. Free memory is still 897.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:46,114 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 441.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 566.48 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5001.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 897.3 MB in the end (delta: 207.0 MB). Peak memory consumption was 207.0 MB. Max. memory is 11.5 GB. * Witness Printer took 63.86 ms. Allocated memory is still 1.2 GB. Free memory is still 897.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L46] COND FALSE !(__fpclassify_double(x) == 0) [L19] __uint32_t msw, lsw; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y [L51] return x < y ? x : y; [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L55] __uint32_t msw; [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; [L79] EXPR res == -0.0 && __signbit_double(res) == 1 [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10764 SizeOfPredicates, 27 NumberOfNonLiveVariables, 388 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 incorrect! Received shutdown request...