./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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_1252b.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 6f57b560c2271100a3cc213cf38aa06905e4b86e .............................................................................................................................................................................................................................................................................................................................................................. 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_1252b.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 6f57b560c2271100a3cc213cf38aa06905e4b86e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:45:48,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:45:48,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:45:48,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:45:48,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:45:48,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:45:48,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:45:48,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:45:48,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:45:48,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:45:48,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:45:48,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:45:48,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:45:48,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:45:48,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:45:48,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:45:48,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:45:48,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:45:48,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:45:48,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:45:48,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:45:48,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:45:48,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:45:48,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:45:48,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:45:48,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:45:48,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:45:48,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:45:48,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:45:48,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:45:48,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:48,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:48,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:48,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:48,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:48,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:48,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:48,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:48,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:48,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:48,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:48,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:45:48,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:48,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:48,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:48,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:48,273 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:48,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:48,274 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:48,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:45:48,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:48,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:48,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:48,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:48,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:48,277 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:48,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:48,277 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:48,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:48,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:48,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:48,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:48,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:48,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:48,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:48,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:48,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:48,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:45:48,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:45:48,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:48,280 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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-27 23:45:48,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:48,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:48,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:48,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:48,598 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:48,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-27 23:45:48,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4755cb5bc/99be781721f4486789a333bf52ed593b/FLAGdbca9ef6e [2019-11-27 23:45:49,156 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:49,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-27 23:45:49,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4755cb5bc/99be781721f4486789a333bf52ed593b/FLAGdbca9ef6e [2019-11-27 23:45:49,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4755cb5bc/99be781721f4486789a333bf52ed593b [2019-11-27 23:45:49,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:49,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:49,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:49,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:49,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:49,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772fdc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49, skipping insertion in model container [2019-11-27 23:45:49,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:49,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:49,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:49,760 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:49,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:49,871 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:49,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49 WrapperNode [2019-11-27 23:45:49,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:49,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:49,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:49,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:49,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:49,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:49,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:49,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:49,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (1/1) ... [2019-11-27 23:45:49,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:49,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:49,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:49,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:49,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (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 23:45:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:45:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:50,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:45:50,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:50,409 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:50,410 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:45:50,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:50 BoogieIcfgContainer [2019-11-27 23:45:50,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:50,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:50,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:50,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:50,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:49" (1/3) ... [2019-11-27 23:45:50,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c2d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:50, skipping insertion in model container [2019-11-27 23:45:50,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:49" (2/3) ... [2019-11-27 23:45:50,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c2d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:50, skipping insertion in model container [2019-11-27 23:45:50,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:50" (3/3) ... [2019-11-27 23:45:50,418 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-27 23:45:50,428 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:50,439 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:50,449 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:50,468 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:50,468 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:50,468 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:50,469 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:50,469 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:50,469 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:50,469 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:50,469 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-27 23:45:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:50,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:50,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:50,488 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:50,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:50,494 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-27 23:45:50,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:50,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029386091] [2019-11-27 23:45:50,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:45:50,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029386091] [2019-11-27 23:45:50,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:50,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:45:50,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620628253] [2019-11-27 23:45:50,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:50,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:50,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:50,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:50,630 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-27 23:45:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:50,653 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-27 23:45:50,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:50,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:50,671 INFO L225 Difference]: With dead ends: 62 [2019-11-27 23:45:50,671 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:45:50,678 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 23:45:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:45:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:45:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:45:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-27 23:45:50,722 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-27 23:45:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:50,722 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-27 23:45:50,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-27 23:45:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:50,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:50,723 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:50,724 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:50,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-27 23:45:50,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:50,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528630883] [2019-11-27 23:45:50,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:45:50,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528630883] [2019-11-27 23:45:50,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:50,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:50,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778941274] [2019-11-27 23:45:50,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:50,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:50,833 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-27 23:45:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:50,930 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-27 23:45:50,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:50,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:45:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:50,933 INFO L225 Difference]: With dead ends: 53 [2019-11-27 23:45:50,933 INFO L226 Difference]: Without dead ends: 44 [2019-11-27 23:45:50,936 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 23:45:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-27 23:45:50,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-27 23:45:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:45:50,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:45:50,945 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-27 23:45:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:50,946 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:45:50,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:45:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:50,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:50,947 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:50,947 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-27 23:45:50,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:50,948 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803287545] [2019-11-27 23:45:50,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:45:51,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803287545] [2019-11-27 23:45:51,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:51,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:51,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762891317] [2019-11-27 23:45:51,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:51,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:51,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:51,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:51,045 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-27 23:45:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:51,108 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-27 23:45:51,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:51,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:45:51,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:51,111 INFO L225 Difference]: With dead ends: 55 [2019-11-27 23:45:51,112 INFO L226 Difference]: Without dead ends: 46 [2019-11-27 23:45:51,112 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 23:45:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-27 23:45:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-27 23:45:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:45:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:45:51,124 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-27 23:45:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:51,126 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:45:51,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:45:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:51,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:51,128 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:51,129 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-27 23:45:51,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:51,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425993867] [2019-11-27 23:45:51,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:51,243 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:45:51,243 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:45:51,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:51 BoogieIcfgContainer [2019-11-27 23:45:51,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:51,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:51,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:51,270 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:51,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:50" (3/4) ... [2019-11-27 23:45:51,274 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:45:51,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:51,276 INFO L168 Benchmark]: Toolchain (without parser) took 1772.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -90.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:51,277 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:51,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:51,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.15 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 23:45:51,279 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 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 23:45:51,280 INFO L168 Benchmark]: RCFGBuilder took 441.48 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:51,281 INFO L168 Benchmark]: TraceAbstraction took 857.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:51,282 INFO L168 Benchmark]: Witness Printer took 3.69 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 23:45:51,286 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 368.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.15 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 37.92 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 441.48 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 857.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:45:53,217 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:45:53,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:53,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:53,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:53,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:53,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:53,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:53,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:53,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:53,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:53,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:53,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:53,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:45:53,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:53,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:53,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:53,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:53,315 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:53,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:53,315 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:53,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:53,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:53,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:53,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:53,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:53,317 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:45:53,317 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:45:53,317 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:53,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:53,317 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:53,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:53,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:53,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:53,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:53,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:53,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:53,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:53,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:53,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:53,320 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:45:53,320 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:45:53,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:53,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:45:53,321 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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-11-27 23:45:53,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:53,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:53,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:53,666 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:53,667 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:53,668 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-27 23:45:53,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcbaf7c4/8b5e486de1464fa8affcfe198fc6885e/FLAGa9b58ecb6 [2019-11-27 23:45:54,202 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:54,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-11-27 23:45:54,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcbaf7c4/8b5e486de1464fa8affcfe198fc6885e/FLAGa9b58ecb6 [2019-11-27 23:45:54,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcbaf7c4/8b5e486de1464fa8affcfe198fc6885e [2019-11-27 23:45:54,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:54,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:54,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:54,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:54,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:54,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:54,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2295286e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54, skipping insertion in model container [2019-11-27 23:45:54,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:54,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:54,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:54,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:54,811 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:54,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:54,954 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:54,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54 WrapperNode [2019-11-27 23:45:54,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:54,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:54,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:54,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:54,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:54,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:55,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:55,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:55,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:55,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (1/1) ... [2019-11-27 23:45:55,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:55,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:55,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:55,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:55,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (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 23:45:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-27 23:45:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:45:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:55,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:55,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:55,524 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:55,525 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:45:55,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:55 BoogieIcfgContainer [2019-11-27 23:45:55,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:55,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:55,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:55,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:55,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:54" (1/3) ... [2019-11-27 23:45:55,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3081e088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:55, skipping insertion in model container [2019-11-27 23:45:55,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:54" (2/3) ... [2019-11-27 23:45:55,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3081e088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:55, skipping insertion in model container [2019-11-27 23:45:55,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:55" (3/3) ... [2019-11-27 23:45:55,535 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-11-27 23:45:55,545 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:55,551 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:55,560 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:55,580 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:55,580 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:55,580 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:55,580 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:55,580 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:55,581 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:55,581 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:55,581 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-27 23:45:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:55,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:55,599 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:55,600 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-27 23:45:55,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:55,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223780636] [2019-11-27 23:45:55,615 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 23:45:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:55,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:45:55,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:55,707 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 23:45:55,707 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:55,711 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 23:45:55,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223780636] [2019-11-27 23:45:55,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:55,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:45:55,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512237766] [2019-11-27 23:45:55,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:55,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:55,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:55,735 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-27 23:45:55,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:55,760 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-27 23:45:55,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:55,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:55,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:55,777 INFO L225 Difference]: With dead ends: 62 [2019-11-27 23:45:55,778 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:45:55,781 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 23:45:55,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:45:55,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:45:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:45:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-27 23:45:55,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-27 23:45:55,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:55,817 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-27 23:45:55,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-27 23:45:55,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:55,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:55,818 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:56,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:45:56,019 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:56,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-27 23:45:56,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:56,023 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927148403] [2019-11-27 23:45:56,023 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 23:45:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:56,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:56,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:56,149 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 23:45:56,149 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:56,184 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 23:45:56,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927148403] [2019-11-27 23:45:56,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:56,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:56,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148246911] [2019-11-27 23:45:56,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:56,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:56,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:56,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:56,189 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-27 23:45:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:56,285 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-27 23:45:56,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:56,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:45:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:56,287 INFO L225 Difference]: With dead ends: 68 [2019-11-27 23:45:56,288 INFO L226 Difference]: Without dead ends: 59 [2019-11-27 23:45:56,289 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 23:45:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-27 23:45:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-27 23:45:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:45:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:45:56,298 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-27 23:45:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:56,298 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:45:56,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:56,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:45:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:56,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:56,300 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:56,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:45:56,514 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:56,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-27 23:45:56,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:56,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901118746] [2019-11-27 23:45:56,517 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 23:45:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:56,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:45:56,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:56,666 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 23:45:56,666 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:56,713 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 23:45:56,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901118746] [2019-11-27 23:45:56,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:56,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:56,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206217956] [2019-11-27 23:45:56,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:56,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:56,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:56,718 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-11-27 23:45:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:56,831 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-27 23:45:56,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:56,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-27 23:45:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:56,832 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:45:56,833 INFO L226 Difference]: Without dead ends: 28 [2019-11-27 23:45:56,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:45:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-27 23:45:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-27 23:45:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 23:45:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-27 23:45:56,839 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-11-27 23:45:56,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:56,840 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-27 23:45:56,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:56,840 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-27 23:45:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:45:56,841 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:56,842 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:57,055 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:45:57,055 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:57,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-27 23:45:57,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:57,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334228584] [2019-11-27 23:45:57,059 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 23:45:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:57,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:57,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:57,184 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 23:45:57,184 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:57,202 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 23:45:57,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334228584] [2019-11-27 23:45:57,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:57,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:57,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699503811] [2019-11-27 23:45:57,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:57,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:57,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:57,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:57,205 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-11-27 23:45:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:57,284 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-11-27 23:45:57,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:57,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:45:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:57,286 INFO L225 Difference]: With dead ends: 65 [2019-11-27 23:45:57,286 INFO L226 Difference]: Without dead ends: 56 [2019-11-27 23:45:57,287 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 23:45:57,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-27 23:45:57,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-11-27 23:45:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 23:45:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-11-27 23:45:57,294 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-11-27 23:45:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:57,294 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-27 23:45:57,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-11-27 23:45:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:45:57,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:57,296 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 23:45:57,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:45:57,501 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-27 23:45:57,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:57,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295046175] [2019-11-27 23:45:57,504 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 23:45:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:57,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:45:57,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:57,639 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 23:45:57,640 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:57,675 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 23:45:57,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295046175] [2019-11-27 23:45:57,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:57,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 23:45:57,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973731359] [2019-11-27 23:45:57,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:57,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:57,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:57,678 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-11-27 23:45:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:57,695 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-27 23:45:57,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:45:57,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-27 23:45:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:57,698 INFO L225 Difference]: With dead ends: 40 [2019-11-27 23:45:57,698 INFO L226 Difference]: Without dead ends: 30 [2019-11-27 23:45:57,699 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 23:45:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-27 23:45:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-27 23:45:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 23:45:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-11-27 23:45:57,705 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-11-27 23:45:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:57,705 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-11-27 23:45:57,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-11-27 23:45:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:45:57,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:57,707 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 23:45:57,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:45:57,920 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:57,921 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-27 23:45:57,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:57,922 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507356949] [2019-11-27 23:45:57,922 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 23:45:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:58,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:45:58,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:58,085 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 23:45:58,086 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:58,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:58,147 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 23:45:58,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507356949] [2019-11-27 23:45:58,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:58,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-27 23:45:58,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500751880] [2019-11-27 23:45:58,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-27 23:45:58,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:58,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-27 23:45:58,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-27 23:45:58,150 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-11-27 23:45:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:58,295 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-11-27 23:45:58,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:45:58,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-27 23:45:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:58,297 INFO L225 Difference]: With dead ends: 42 [2019-11-27 23:45:58,297 INFO L226 Difference]: Without dead ends: 39 [2019-11-27 23:45:58,298 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 23:45:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-27 23:45:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-11-27 23:45:58,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-27 23:45:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-11-27 23:45:58,304 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-11-27 23:45:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:58,304 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-11-27 23:45:58,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-27 23:45:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-11-27 23:45:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:45:58,306 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:58,306 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 23:45:58,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:45:58,507 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-27 23:45:58,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:58,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766420691] [2019-11-27 23:45:58,510 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 23:45:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:58,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:45:58,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:58,685 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 23:45:58,686 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:58,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:58,815 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 23:45:58,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766420691] [2019-11-27 23:45:58,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:58,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-27 23:45:58,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650255357] [2019-11-27 23:45:58,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:45:58,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:58,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:45:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:45:58,819 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-11-27 23:45:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:58,940 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-11-27 23:45:58,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:45:58,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-11-27 23:45:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:58,943 INFO L225 Difference]: With dead ends: 45 [2019-11-27 23:45:58,943 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 23:45:58,943 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 23:45:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 23:45:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-27 23:45:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-27 23:45:58,949 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-11-27 23:45:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:58,949 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-27 23:45:58,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:45:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-27 23:45:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-27 23:45:58,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:58,951 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 23:45:59,163 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-27 23:45:59,164 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-27 23:45:59,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:59,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293930872] [2019-11-27 23:45:59,167 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 23:45:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:59,511 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:45:59,512 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:45:59,714 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-27 23:45:59,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:59 BoogieIcfgContainer [2019-11-27 23:45:59,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:59,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:59,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:59,750 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:59,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:55" (3/4) ... [2019-11-27 23:45:59,752 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:45:59,811 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:45:59,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:59,814 INFO L168 Benchmark]: Toolchain (without parser) took 5255.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 960.4 MB in the beginning and 893.9 MB in the end (delta: 66.4 MB). Peak memory consumption was 217.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:59,814 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:59,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:59,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.07 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 23:45:59,816 INFO L168 Benchmark]: Boogie Preprocessor took 39.07 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 23:45:59,817 INFO L168 Benchmark]: RCFGBuilder took 486.83 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:59,817 INFO L168 Benchmark]: TraceAbstraction took 4222.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 893.9 MB in the end (delta: 214.6 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:59,818 INFO L168 Benchmark]: Witness Printer took 61.50 ms. Allocated memory is still 1.2 GB. Free memory is still 893.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:59,821 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 396.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -181.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.07 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 39.07 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 486.83 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: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4222.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 893.9 MB in the end (delta: 214.6 MB). Peak memory consumption was 214.6 MB. Max. memory is 11.5 GB. * Witness Printer took 61.50 ms. Allocated memory is still 1.2 GB. Free memory is still 893.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s 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, 0.6s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 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...