./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1230.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_1230.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 b865bb4da04412be07ba7e2426d2224bb04a2953 .............................................................................................................................................................................................................................................................................................................................................................. 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_1230.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 b865bb4da04412be07ba7e2426d2224bb04a2953 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:45:29,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:45:29,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:45:29,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:45:29,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:45:29,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:45:29,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:45:29,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:45:29,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:45:29,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:45:29,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:45:29,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:45:29,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:45:29,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:45:29,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:45:29,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:45:29,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:45:29,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:45:29,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:45:29,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:45:29,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:45:29,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:45:29,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:45:29,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:45:29,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:45:29,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:45:29,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:45:29,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:45:29,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:45:29,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:45:29,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:29,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:29,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:29,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:29,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:29,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:29,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:29,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:29,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:29,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:29,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:29,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:45:29,596 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:29,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:29,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:29,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:29,598 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:29,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:29,599 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:29,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:45:29,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:29,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:29,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:29,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:29,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:29,601 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:29,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:29,601 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:29,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:29,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:29,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:29,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:29,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:29,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:29,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:29,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:29,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:29,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:45:29,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:45:29,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:29,605 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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2019-11-27 23:45:29,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:29,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:29,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:29,972 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:29,972 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:29,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-27 23:45:30,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574ebc88a/3dd9c3ad76bc483cb99dafe90edfe392/FLAG301801b90 [2019-11-27 23:45:30,556 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:30,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-27 23:45:30,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574ebc88a/3dd9c3ad76bc483cb99dafe90edfe392/FLAG301801b90 [2019-11-27 23:45:30,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574ebc88a/3dd9c3ad76bc483cb99dafe90edfe392 [2019-11-27 23:45:30,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:30,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:30,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:30,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:30,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:30,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:30" (1/1) ... [2019-11-27 23:45:30,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c68b475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:30, skipping insertion in model container [2019-11-27 23:45:30,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:30" (1/1) ... [2019-11-27 23:45:30,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:30,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:31,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:31,224 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:31,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:31,404 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:31,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31 WrapperNode [2019-11-27 23:45:31,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:31,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:31,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:31,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:31,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:31,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:31,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:31,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:31,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (1/1) ... [2019-11-27 23:45:31,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:31,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:31,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:31,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:31,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (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 23:45:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:45:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:45:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:31,935 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:31,936 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:45:31,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:31 BoogieIcfgContainer [2019-11-27 23:45:31,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:31,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:31,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:31,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:31,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:30" (1/3) ... [2019-11-27 23:45:31,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368b8f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:31, skipping insertion in model container [2019-11-27 23:45:31,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:31" (2/3) ... [2019-11-27 23:45:31,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368b8f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:31, skipping insertion in model container [2019-11-27 23:45:31,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:31" (3/3) ... [2019-11-27 23:45:31,947 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2019-11-27 23:45:31,968 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:31,989 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:32,011 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:32,050 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:32,050 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:32,051 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:32,051 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:32,052 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:32,052 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:32,052 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:32,052 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:45:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:32,084 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:32,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:32,085 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:32,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:32,093 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:45:32,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:32,105 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596068726] [2019-11-27 23:45:32,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:32,224 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 23:45:32,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596068726] [2019-11-27 23:45:32,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:32,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:45:32,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95296836] [2019-11-27 23:45:32,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:32,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:32,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:32,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:32,250 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:45:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:32,272 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:45:32,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:32,274 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:32,284 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:45:32,284 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:45:32,287 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 23:45:32,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:45:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:45:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:45:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:45:32,322 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:45:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:32,323 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:45:32,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:45:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:32,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:32,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:32,324 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:32,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:45:32,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:32,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886802320] [2019-11-27 23:45:32,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:32,417 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 23:45:32,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886802320] [2019-11-27 23:45:32,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:32,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:32,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873427341] [2019-11-27 23:45:32,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:32,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:32,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:32,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:32,421 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-27 23:45:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:32,501 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-27 23:45:32,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:32,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:45:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:32,503 INFO L225 Difference]: With dead ends: 41 [2019-11-27 23:45:32,503 INFO L226 Difference]: Without dead ends: 36 [2019-11-27 23:45:32,504 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 23:45:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-27 23:45:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-27 23:45:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:45:32,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:45:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:32,512 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:45:32,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:45:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:32,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:32,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:32,514 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:32,515 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-27 23:45:32,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:32,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96723256] [2019-11-27 23:45:32,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:32,595 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 23:45:32,596 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96723256] [2019-11-27 23:45:32,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:32,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:45:32,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845828642] [2019-11-27 23:45:32,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:45:32,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:45:32,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:45:32,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:45:32,600 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-27 23:45:32,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:32,675 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-27 23:45:32,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:45:32,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:45:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:32,680 INFO L225 Difference]: With dead ends: 43 [2019-11-27 23:45:32,680 INFO L226 Difference]: Without dead ends: 38 [2019-11-27 23:45:32,681 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 23:45:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-27 23:45:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-27 23:45:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:45:32,691 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-27 23:45:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:32,692 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:45:32,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:45:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:45:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:32,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:32,693 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:32,693 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:45:32,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:45:32,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386434781] [2019-11-27 23:45:32,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:45:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:45:32,800 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:45:32,801 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:45:32,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:32 BoogieIcfgContainer [2019-11-27 23:45:32,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:32,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:32,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:32,849 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:32,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:31" (3/4) ... [2019-11-27 23:45:32,855 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:45:32,855 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:32,860 INFO L168 Benchmark]: Toolchain (without parser) took 1933.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -84.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:32,862 INFO L168 Benchmark]: CDTParser took 0.63 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 23:45:32,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:32,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.58 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:32,866 INFO L168 Benchmark]: Boogie Preprocessor took 40.06 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 23:45:32,867 INFO L168 Benchmark]: RCFGBuilder took 437.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:32,874 INFO L168 Benchmark]: TraceAbstraction took 909.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:32,875 INFO L168 Benchmark]: Witness Printer took 7.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:32,887 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 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 479.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.58 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.06 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 437.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.6 MB). Peak memory consumption was 31.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 909.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * Witness Printer took 7.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L63] double res = fmin_double(x, y); [L16] return x != x; [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:45:34,846 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:45:34,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:45:34,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:45:34,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:45:34,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:45:34,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:45:34,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:45:34,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:45:34,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:45:34,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:45:34,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:45:34,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:45:34,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:45:34,963 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:45:34,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:45:34,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:45:34,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:45:34,967 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:45:34,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:45:34,968 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:45:34,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:45:34,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:45:34,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:45:34,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:45:34,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:45:34,971 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:45:34,971 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:45:34,972 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:45:34,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:45:34,972 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:45:34,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:45:34,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:45:34,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:45:34,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:45:34,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:45:34,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:45:34,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:45:34,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:45:34,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:45:34,976 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:45:34,976 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:45:34,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:45:34,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:45:34,977 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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2019-11-27 23:45:35,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:45:35,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:45:35,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:45:35,293 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:45:35,294 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:45:35,294 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-27 23:45:35,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c886b6d48/8b3134d949b445bfa611f3f745029445/FLAGadb652328 [2019-11-27 23:45:35,796 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:45:35,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-27 23:45:35,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c886b6d48/8b3134d949b445bfa611f3f745029445/FLAGadb652328 [2019-11-27 23:45:36,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c886b6d48/8b3134d949b445bfa611f3f745029445 [2019-11-27 23:45:36,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:45:36,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:45:36,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:36,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:45:36,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:45:36,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cff6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36, skipping insertion in model container [2019-11-27 23:45:36,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:45:36,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:45:36,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:36,511 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:45:36,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:45:36,650 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:45:36,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36 WrapperNode [2019-11-27 23:45:36,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:45:36,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:36,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:45:36,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:45:36,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:45:36,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:45:36,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:45:36,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:45:36,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (1/1) ... [2019-11-27 23:45:36,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:45:36,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:45:36,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:45:36,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:45:36,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (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 23:45:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-27 23:45:36,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:45:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:45:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:45:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:45:36,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:45:37,258 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:45:37,259 INFO L297 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-27 23:45:37,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:37 BoogieIcfgContainer [2019-11-27 23:45:37,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:45:37,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:45:37,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:45:37,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:45:37,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:45:36" (1/3) ... [2019-11-27 23:45:37,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f75a48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:37, skipping insertion in model container [2019-11-27 23:45:37,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:45:36" (2/3) ... [2019-11-27 23:45:37,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f75a48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:45:37, skipping insertion in model container [2019-11-27 23:45:37,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:37" (3/3) ... [2019-11-27 23:45:37,269 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2019-11-27 23:45:37,279 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:45:37,286 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:45:37,296 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:45:37,316 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:45:37,316 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:45:37,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:45:37,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:45:37,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:45:37,317 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:45:37,317 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:45:37,317 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:45:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-27 23:45:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:45:37,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:37,339 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:37,340 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:37,346 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-27 23:45:37,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:37,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807345228] [2019-11-27 23:45:37,359 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 23:45:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:37,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:45:37,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:37,492 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 23:45:37,492 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:37,496 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 23:45:37,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807345228] [2019-11-27 23:45:37,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:37,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:45:37,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83065771] [2019-11-27 23:45:37,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:45:37,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:37,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:45:37,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:45:37,521 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-27 23:45:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:37,542 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-27 23:45:37,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:45:37,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:45:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:37,555 INFO L225 Difference]: With dead ends: 54 [2019-11-27 23:45:37,555 INFO L226 Difference]: Without dead ends: 25 [2019-11-27 23:45:37,558 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 23:45:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-27 23:45:37,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-27 23:45:37,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:45:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-27 23:45:37,595 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-27 23:45:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:37,596 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-27 23:45:37,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:45:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-27 23:45:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:45:37,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:37,597 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:37,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:45:37,812 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:37,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-27 23:45:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:37,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169287835] [2019-11-27 23:45:37,815 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 23:45:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:37,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:37,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:37,944 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 23:45:37,944 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:37,979 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 23:45:37,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169287835] [2019-11-27 23:45:37,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:37,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:37,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580754205] [2019-11-27 23:45:37,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:37,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:37,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:37,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:37,985 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-27 23:45:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:38,105 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-27 23:45:38,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:38,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:45:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:38,107 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:45:38,107 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:45:38,108 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 23:45:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:45:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:45:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-27 23:45:38,116 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-27 23:45:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:38,116 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-27 23:45:38,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-27 23:45:38,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:45:38,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:38,117 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:38,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:45:38,334 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:38,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-27 23:45:38,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:38,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608957610] [2019-11-27 23:45:38,338 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 23:45:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:38,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:45:38,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:38,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:38,585 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 23:45:38,585 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:38,713 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 23:45:38,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608957610] [2019-11-27 23:45:38,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:38,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:45:38,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310968576] [2019-11-27 23:45:38,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:45:38,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:38,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:45:38,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:45:38,716 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-27 23:45:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:39,131 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-27 23:45:39,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:39,132 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-27 23:45:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:39,133 INFO L225 Difference]: With dead ends: 36 [2019-11-27 23:45:39,133 INFO L226 Difference]: Without dead ends: 27 [2019-11-27 23:45:39,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:45:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-27 23:45:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-27 23:45:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-27 23:45:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-27 23:45:39,139 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-27 23:45:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:39,140 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-27 23:45:39,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:45:39,140 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-27 23:45:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:45:39,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:39,141 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:45:39,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:45:39,342 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:39,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-27 23:45:39,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:39,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777067384] [2019-11-27 23:45:39,346 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 23:45:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:39,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:45:39,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:39,556 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 23:45:39,560 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:39,588 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 23:45:39,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777067384] [2019-11-27 23:45:39,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:39,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:45:39,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563877683] [2019-11-27 23:45:39,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:45:39,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:45:39,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:45:39,596 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-27 23:45:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:39,750 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-27 23:45:39,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:39,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:45:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:39,756 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:45:39,757 INFO L226 Difference]: Without dead ends: 47 [2019-11-27 23:45:39,758 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 23:45:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-27 23:45:39,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-27 23:45:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 23:45:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-27 23:45:39,773 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-27 23:45:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:39,774 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-27 23:45:39,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:45:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-27 23:45:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:45:39,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:39,778 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 23:45:39,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:45:39,993 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-27 23:45:39,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:39,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005210428] [2019-11-27 23:45:39,996 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 23:45:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:40,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-27 23:45:40,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:40,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:40,265 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 23:45:40,265 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:40,424 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 23:45:40,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005210428] [2019-11-27 23:45:40,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:40,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-27 23:45:40,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554575127] [2019-11-27 23:45:40,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-27 23:45:40,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-27 23:45:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:45:40,427 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-27 23:45:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:40,919 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-27 23:45:40,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:45:40,920 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-27 23:45:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:40,921 INFO L225 Difference]: With dead ends: 32 [2019-11-27 23:45:40,921 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:45:40,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:45:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:45:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-27 23:45:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 23:45:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-27 23:45:40,926 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-27 23:45:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:40,927 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-27 23:45:40,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-27 23:45:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-27 23:45:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:45:40,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:45:40,928 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 23:45:41,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:45:41,133 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:45:41,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:45:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-27 23:45:41,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:45:41,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003305450] [2019-11-27 23:45:41,137 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 23:45:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:45:41,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:45:41,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:45:41,364 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:45:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:45:41,407 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:45:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:45:41,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003305450] [2019-11-27 23:45:41,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:45:41,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-27 23:45:41,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589207496] [2019-11-27 23:45:41,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-27 23:45:41,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:45:41,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-27 23:45:41,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-27 23:45:41,496 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-27 23:45:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:45:41,737 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-27 23:45:41,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:45:41,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-27 23:45:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:45:41,739 INFO L225 Difference]: With dead ends: 23 [2019-11-27 23:45:41,739 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:45:41,740 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:45:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:45:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:45:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:45:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:45:41,741 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-27 23:45:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:45:41,742 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:45:41,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-27 23:45:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:45:41,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:45:41,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:45:41,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:45:42,275 INFO L246 CegarLoopResult]: For program point L65(lines 65 68) no Hoare annotation was computed. [2019-11-27 23:45:42,275 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:45:42,276 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:45:42,276 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:45:42,276 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2019-11-27 23:45:42,276 INFO L246 CegarLoopResult]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2019-11-27 23:45:42,277 INFO L242 CegarLoopResult]: At program point L20-2(lines 20 25) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-27 23:45:42,277 INFO L246 CegarLoopResult]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2019-11-27 23:45:42,277 INFO L242 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (not (fp.eq |ULTIMATE.start_fmin_double_#res| |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2019-11-27 23:45:42,278 INFO L246 CegarLoopResult]: For program point L20-5(lines 20 25) no Hoare annotation was computed. [2019-11-27 23:45:42,278 INFO L242 CegarLoopResult]: At program point L20-6(lines 20 25) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-27 23:45:42,278 INFO L246 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-27 23:45:42,278 INFO L246 CegarLoopResult]: For program point L20-7(lines 17 42) no Hoare annotation was computed. [2019-11-27 23:45:42,278 INFO L242 CegarLoopResult]: At program point L41(lines 17 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-27 23:45:42,279 INFO L242 CegarLoopResult]: At program point L41-1(lines 17 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2019-11-27 23:45:42,279 INFO L249 CegarLoopResult]: At program point L70(lines 53 71) the Hoare annotation is: true [2019-11-27 23:45:42,279 INFO L246 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2019-11-27 23:45:42,279 INFO L246 CegarLoopResult]: For program point L37-1(lines 37 41) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point L33(lines 33 41) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point L33-1(lines 33 41) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-27 23:45:42,280 INFO L242 CegarLoopResult]: At program point L50-3(lines 44 51) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (not (fp.eq |ULTIMATE.start_fmin_double_#res| |ULTIMATE.start_fmin_double_#res|))) [2019-11-27 23:45:42,280 INFO L246 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2019-11-27 23:45:42,281 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 41) no Hoare annotation was computed. [2019-11-27 23:45:42,281 INFO L246 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2019-11-27 23:45:42,287 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:42,294 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:42,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:42,296 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:42,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:45:42 BoogieIcfgContainer [2019-11-27 23:45:42,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:45:42,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:45:42,302 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:45:42,302 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:45:42,302 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:45:37" (3/4) ... [2019-11-27 23:45:42,305 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:45:42,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-27 23:45:42,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-27 23:45:42,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-27 23:45:42,346 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result) [2019-11-27 23:45:42,346 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2019-11-27 23:45:42,347 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2019-11-27 23:45:42,386 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:45:42,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:45:42,388 INFO L168 Benchmark]: Toolchain (without parser) took 6164.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 952.3 MB in the beginning and 895.3 MB in the end (delta: 57.0 MB). Peak memory consumption was 204.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:42,389 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:45:42,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:42,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.86 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:42,391 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 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 23:45:42,391 INFO L168 Benchmark]: RCFGBuilder took 521.42 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:42,392 INFO L168 Benchmark]: TraceAbstraction took 5039.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:42,393 INFO L168 Benchmark]: Witness Printer took 84.68 ms. Allocated memory is still 1.2 GB. Free memory was 901.8 MB in the beginning and 895.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:45:42,398 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 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 426.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.86 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.80 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 521.42 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: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5039.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 901.8 MB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 11.5 GB. * Witness Printer took 84.68 ms. Allocated memory is still 1.2 GB. Free memory was 901.8 MB in the beginning and 895.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant [2019-11-27 23:45:42,415 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:42,416 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 16]: Loop Invariant [2019-11-27 23:45:42,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-27 23:45:42,417 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 333 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...