./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer --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 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer --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 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:44:09,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:44:09,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:44:09,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:44:09,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:44:09,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:44:09,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:44:09,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:44:09,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:44:09,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:44:09,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:44:09,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:44:09,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:44:09,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:44:09,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:44:09,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:44:09,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:44:09,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:44:09,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:44:09,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:44:09,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:44:09,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:44:09,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:44:09,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:44:09,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:44:09,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:44:09,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:44:09,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:44:09,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:44:09,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:44:09,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:44:09,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:44:09,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:44:09,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:44:09,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:44:09,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:44:09,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:44:09,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:44:09,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:44:09,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:44:09,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:44:09,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:44:09,485 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:44:09,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:44:09,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:44:09,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:44:09,487 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:44:09,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:44:09,487 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:44:09,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:44:09,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:44:09,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:44:09,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:44:09,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:44:09,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:44:09,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:44:09,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:44:09,489 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:44:09,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:44:09,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:44:09,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:44:09,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:44:09,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:44:09,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:44:09,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:44:09,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:44:09,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:44:09,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:44:09,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:44:09,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:44:09,492 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer 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 -> 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 [2019-11-15 23:44:09,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:44:09,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:44:09,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:44:09,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:44:09,549 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:44:09,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-15 23:44:09,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/4db5b656c/95bde084ef1b4e0c8a9c23178807e626/FLAG505610c5d [2019-11-15 23:44:10,006 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:44:10,007 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-15 23:44:10,013 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/4db5b656c/95bde084ef1b4e0c8a9c23178807e626/FLAG505610c5d [2019-11-15 23:44:10,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/4db5b656c/95bde084ef1b4e0c8a9c23178807e626 [2019-11-15 23:44:10,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:44:10,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:44:10,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:10,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:44:10,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:44:10,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35879932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10, skipping insertion in model container [2019-11-15 23:44:10,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,042 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:44:10,063 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:44:10,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:10,316 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:44:10,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:10,375 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:44:10,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10 WrapperNode [2019-11-15 23:44:10,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:10,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:10,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:44:10,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:44:10,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:10,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:44:10,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:44:10,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:44:10,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... [2019-11-15 23:44:10,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:44:10,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:44:10,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:44:10,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:44:10,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/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 [2019-11-15 23:44:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:44:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 23:44:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:44:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:44:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:44:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:44:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:44:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:44:11,056 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:44:11,056 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 23:44:11,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:11 BoogieIcfgContainer [2019-11-15 23:44:11,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:44:11,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:44:11,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:44:11,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:44:11,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:44:10" (1/3) ... [2019-11-15 23:44:11,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608606ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:11, skipping insertion in model container [2019-11-15 23:44:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:10" (2/3) ... [2019-11-15 23:44:11,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608606ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:11, skipping insertion in model container [2019-11-15 23:44:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:11" (3/3) ... [2019-11-15 23:44:11,065 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2019-11-15 23:44:11,073 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:44:11,080 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:44:11,090 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:44:11,116 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:44:11,117 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:44:11,118 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:44:11,118 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:44:11,118 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:44:11,118 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:44:11,118 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:44:11,119 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:44:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-15 23:44:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:44:11,144 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:11,145 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:11,148 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:11,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:11,155 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2019-11-15 23:44:11,163 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:11,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16030308] [2019-11-15 23:44:11,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:11,164 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:11,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:11,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16030308] [2019-11-15 23:44:11,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:11,258 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:44:11,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882063391] [2019-11-15 23:44:11,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:44:11,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:44:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:44:11,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:44:11,274 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-15 23:44:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:11,291 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2019-11-15 23:44:11,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:44:11,293 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:44:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:11,303 INFO L225 Difference]: With dead ends: 102 [2019-11-15 23:44:11,303 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 23:44:11,306 INFO L600 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 [2019-11-15 23:44:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 23:44:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-11-15 23:44:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-15 23:44:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2019-11-15 23:44:11,340 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2019-11-15 23:44:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:11,341 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2019-11-15 23:44:11,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:44:11,341 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2019-11-15 23:44:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:44:11,342 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:11,342 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:11,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:11,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2019-11-15 23:44:11,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:11,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253229371] [2019-11-15 23:44:11,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:11,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:11,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:11,530 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:44:11,531 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:44:11,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:44:11 BoogieIcfgContainer [2019-11-15 23:44:11,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:44:11,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:44:11,572 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:44:11,572 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:44:11,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:11" (3/4) ... [2019-11-15 23:44:11,576 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:44:11,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:44:11,579 INFO L168 Benchmark]: Toolchain (without parser) took 1550.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -104.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:11,580 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:11,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:11,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.56 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. [2019-11-15 23:44:11,582 INFO L168 Benchmark]: Boogie Preprocessor took 86.48 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. [2019-11-15 23:44:11,582 INFO L168 Benchmark]: RCFGBuilder took 540.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:11,583 INFO L168 Benchmark]: TraceAbstraction took 512.86 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:11,584 INFO L168 Benchmark]: Witness Printer took 5.01 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. [2019-11-15 23:44:11,591 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 86.48 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 540.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 512.86 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 160]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 142, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 141. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] double x = 1.0 / 0.0; [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L156] double res = __ieee754_sqrt(x); [L134] __int32_t hx, lx; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L136] ieee_double_shape_type ew_u; [L137] ew_u.value = (x) [L138] EXPR ew_u.parts.msw [L138] (hx) = ew_u.parts.msw [L139] EXPR ew_u.parts.lsw [L139] (lx) = ew_u.parts.lsw [L141] hx &= 0x7fffffff [L142] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L143] hx = 0x7ff00000 - hx [L144] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L159] COND TRUE !isinf_double(res) [L160] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:44:13,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:44:13,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:44:13,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:44:13,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:44:13,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:44:13,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:44:13,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:44:13,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:44:13,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:44:13,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:44:13,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:44:13,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:44:13,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:44:13,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:44:13,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:44:13,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:44:13,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:44:13,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:44:13,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:44:13,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:44:13,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:44:13,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:44:13,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:44:13,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:44:13,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:44:13,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:44:13,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:44:13,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:44:13,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:44:13,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:44:13,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:44:13,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:44:13,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:44:13,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:44:13,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:44:13,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:44:13,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:44:13,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:44:13,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:44:13,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:44:13,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:44:13,633 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:44:13,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:44:13,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:44:13,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:44:13,635 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:44:13,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:44:13,636 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:44:13,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:44:13,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:44:13,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:44:13,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:44:13,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:44:13,637 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:44:13,637 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:44:13,637 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:44:13,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:44:13,638 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:44:13,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:44:13,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:44:13,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:44:13,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:44:13,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:44:13,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:44:13,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:44:13,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:44:13,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:44:13,640 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:44:13,640 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:44:13,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:44:13,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:44:13,641 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer 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 -> 3efba836fbeb3ba7aa9b8335c699a7990ba5f7a9 [2019-11-15 23:44:13,673 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:44:13,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:44:13,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:44:13,687 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:44:13,688 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:44:13,689 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-15 23:44:13,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/7a8a9cfc8/50c3f4e4b9db471dbd52df000e6204c6/FLAGff0dcb9e5 [2019-11-15 23:44:14,093 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:44:14,093 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/sv-benchmarks/c/float-newlib/double_req_bl_0730a.c [2019-11-15 23:44:14,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/7a8a9cfc8/50c3f4e4b9db471dbd52df000e6204c6/FLAGff0dcb9e5 [2019-11-15 23:44:14,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/data/7a8a9cfc8/50c3f4e4b9db471dbd52df000e6204c6 [2019-11-15 23:44:14,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:44:14,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:44:14,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:14,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:44:14,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:44:14,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58023854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14, skipping insertion in model container [2019-11-15 23:44:14,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:44:14,492 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:44:14,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:14,691 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:44:14,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:14,840 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:44:14,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14 WrapperNode [2019-11-15 23:44:14,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:14,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:14,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:44:14,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:44:14,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:14,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:44:14,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:44:14,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:44:14,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... [2019-11-15 23:44:14,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:44:14,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:44:14,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:44:14,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:44:14,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/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 [2019-11-15 23:44:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-15 23:44:14,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 23:44:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:44:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:44:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:44:14,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:44:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:44:14,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:44:17,445 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:44:17,446 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 23:44:17,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:17 BoogieIcfgContainer [2019-11-15 23:44:17,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:44:17,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:44:17,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:44:17,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:44:17,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:44:14" (1/3) ... [2019-11-15 23:44:17,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfc5ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:17, skipping insertion in model container [2019-11-15 23:44:17,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:14" (2/3) ... [2019-11-15 23:44:17,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfc5ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:17, skipping insertion in model container [2019-11-15 23:44:17,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:17" (3/3) ... [2019-11-15 23:44:17,453 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2019-11-15 23:44:17,462 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:44:17,469 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:44:17,479 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:44:17,500 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:44:17,501 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:44:17,501 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:44:17,501 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:44:17,502 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:44:17,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:44:17,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:44:17,502 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:44:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-11-15 23:44:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:44:17,521 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:17,522 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:17,524 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:17,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:17,529 INFO L82 PathProgramCache]: Analyzing trace with hash -898135563, now seen corresponding path program 1 times [2019-11-15 23:44:17,538 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:44:17,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032830188] [2019-11-15 23:44:17,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/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 [2019-11-15 23:44:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:17,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:44:17,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:44:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:17,970 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:44:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:17,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032830188] [2019-11-15 23:44:17,975 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:17,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:44:17,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427978057] [2019-11-15 23:44:17,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:44:17,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:44:17,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:44:17,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:44:17,992 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-11-15 23:44:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:18,013 INFO L93 Difference]: Finished difference Result 102 states and 162 transitions. [2019-11-15 23:44:18,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:44:18,015 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:44:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:18,025 INFO L225 Difference]: With dead ends: 102 [2019-11-15 23:44:18,025 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 23:44:18,028 INFO L600 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 [2019-11-15 23:44:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 23:44:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-11-15 23:44:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-15 23:44:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2019-11-15 23:44:18,064 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 10 [2019-11-15 23:44:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:18,065 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2019-11-15 23:44:18,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:44:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2019-11-15 23:44:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:44:18,066 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:18,066 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:18,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:44:18,290 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:18,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1657561708, now seen corresponding path program 1 times [2019-11-15 23:44:18,293 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:44:18,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070614555] [2019-11-15 23:44:18,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7493159d-1a21-4025-aa22-9c29cc5aedab/bin/uautomizer/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 [2019-11-15 23:44:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:18,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 23:44:18,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:44:19,028 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:44:19,029 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 23:44:19,033 INFO L168 Benchmark]: Toolchain (without parser) took 4577.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -107.9 MB). Peak memory consumption was 48.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:19,034 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:19,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:19,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.63 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. [2019-11-15 23:44:19,037 INFO L168 Benchmark]: Boogie Preprocessor took 39.10 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. [2019-11-15 23:44:19,038 INFO L168 Benchmark]: RCFGBuilder took 2519.62 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:19,039 INFO L168 Benchmark]: TraceAbstraction took 1583.11 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:19,045 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 385.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -191.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.10 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 2519.62 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1583.11 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...