./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 .............................................................................................................................................................................................................................................................................................. 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/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ........................................................................................................................................................................................................................................................................................................................................................ 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 [2019-10-22 08:58:28,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:28,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:28,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:28,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:28,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:28,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:28,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:28,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:28,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:28,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:28,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:28,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:28,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:28,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:28,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:28,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:28,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:28,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:28,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:28,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:28,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:28,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:28,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:28,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:28,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:28,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:28,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:28,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:28,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:28,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:28,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:28,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:28,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:28,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:28,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:28,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:28,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:28,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:28,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:28,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:28,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:58:28,530 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:28,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:28,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:28,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:28,531 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:28,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:28,532 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:58:28,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:58:28,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:28,542 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:28,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:28,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:28,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:28,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:28,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:28,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:28,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:28,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:28,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:28,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:28,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:58:28,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:28,544 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/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2019-10-22 08:58:28,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:28,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:28,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:28,594 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:28,594 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:28,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-10-22 08:58:28,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/d3859a943/7c7303ca9a4347c2af779c9c49add211/FLAG1a75dea86 [2019-10-22 08:58:29,032 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:29,033 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-10-22 08:58:29,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/d3859a943/7c7303ca9a4347c2af779c9c49add211/FLAG1a75dea86 [2019-10-22 08:58:29,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/d3859a943/7c7303ca9a4347c2af779c9c49add211 [2019-10-22 08:58:29,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:29,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:29,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:29,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:29,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:29,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f82a224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29, skipping insertion in model container [2019-10-22 08:58:29,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,446 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:29,461 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:29,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:29,661 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:29,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:29,710 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:29,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29 WrapperNode [2019-10-22 08:58:29,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:29,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:29,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:29,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:29,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:29,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:29,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:29,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:29,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... [2019-10-22 08:58:29,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:29,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:29,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:29,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:29,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 [2019-10-22 08:58:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 08:58:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:58:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 08:58:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:58:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:30,137 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:30,137 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 08:58:30,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:30 BoogieIcfgContainer [2019-10-22 08:58:30,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:30,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:30,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:30,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:30,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:29" (1/3) ... [2019-10-22 08:58:30,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d65cf74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:30, skipping insertion in model container [2019-10-22 08:58:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:29" (2/3) ... [2019-10-22 08:58:30,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d65cf74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:30, skipping insertion in model container [2019-10-22 08:58:30,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:30" (3/3) ... [2019-10-22 08:58:30,144 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2019-10-22 08:58:30,152 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:30,158 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:58:30,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:58:30,194 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:30,194 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:30,194 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:30,194 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:30,204 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:30,204 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:30,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:30,205 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-22 08:58:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:58:30,238 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:30,239 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:30,241 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:30,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2019-10-22 08:58:30,257 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:30,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062805693] [2019-10-22 08:58:30,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:30,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:30,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:30,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062805693] [2019-10-22 08:58:30,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:30,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:58:30,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313050329] [2019-10-22 08:58:30,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:58:30,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:30,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:58:30,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:58:30,389 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-10-22 08:58:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:30,406 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-10-22 08:58:30,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:58:30,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 08:58:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:30,420 INFO L225 Difference]: With dead ends: 56 [2019-10-22 08:58:30,420 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 08:58:30,423 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 [2019-10-22 08:58:30,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 08:58:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-22 08:58:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:58:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-10-22 08:58:30,463 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2019-10-22 08:58:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:30,463 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-10-22 08:58:30,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:58:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-10-22 08:58:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:58:30,465 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:30,465 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:30,465 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2019-10-22 08:58:30,466 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:30,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207494941] [2019-10-22 08:58:30,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:30,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:30,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:30,681 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:30,681 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:58:30,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:58:30 BoogieIcfgContainer [2019-10-22 08:58:30,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:58:30,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:30,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:30,711 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:30,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:30" (3/4) ... [2019-10-22 08:58:30,714 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:30,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:30,716 INFO L168 Benchmark]: Toolchain (without parser) took 1283.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -141.4 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:30,717 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:30,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:30,718 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.00 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. [2019-10-22 08:58:30,718 INFO L168 Benchmark]: Boogie Preprocessor took 58.94 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: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:30,719 INFO L168 Benchmark]: RCFGBuilder took 330.40 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:30,719 INFO L168 Benchmark]: TraceAbstraction took 571.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:30,720 INFO L168 Benchmark]: Witness Printer took 3.94 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. [2019-10-22 08:58:30,722 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.00 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 58.94 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: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 330.40 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 571.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.94 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: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND TRUE exponent_less_1023 < 20 [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] return x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 36 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=29occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 [2019-10-22 08:58:32,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:32,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:32,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:32,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:32,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:32,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:32,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:32,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:32,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:32,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:32,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:32,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:32,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:32,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:32,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:32,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:32,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:32,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:32,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:32,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:32,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:32,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:32,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:32,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:32,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:32,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:32,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:32,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:32,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:32,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:32,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:32,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:32,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:32,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:32,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:32,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:32,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:32,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:32,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:32,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:32,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 08:58:32,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:32,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:32,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:32,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:32,667 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:32,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:32,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:58:32,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:58:32,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:58:32,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:32,669 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:32,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:58:32,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:32,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:32,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:58:32,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:58:32,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:58:32,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:32,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:58:32,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:58:32,670 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 08:58:32,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 08:58:32,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:58:32,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 08:58:32,671 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/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2019-10-22 08:58:32,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:32,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:32,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:32,710 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:32,710 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:32,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-10-22 08:58:32,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/8b6b06ede/b4ed221f788a4df78d2346de3a3c752a/FLAGda5f80991 [2019-10-22 08:58:33,162 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:33,162 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2019-10-22 08:58:33,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/8b6b06ede/b4ed221f788a4df78d2346de3a3c752a/FLAGda5f80991 [2019-10-22 08:58:33,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/data/8b6b06ede/b4ed221f788a4df78d2346de3a3c752a [2019-10-22 08:58:33,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:33,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:33,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:33,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:33,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:33,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607c200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33, skipping insertion in model container [2019-10-22 08:58:33,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,576 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:33,592 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:33,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:33,755 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:33,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:33,837 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:33,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33 WrapperNode [2019-10-22 08:58:33,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:33,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:33,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:33,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:33,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:33,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:33,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:33,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:33,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:33,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:34,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:34,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... [2019-10-22 08:58:34,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:34,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:34,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:34,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:34,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 [2019-10-22 08:58:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 08:58:34,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 08:58:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 08:58:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:34,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:58:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 08:58:34,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:58:34,415 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:34,415 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 08:58:34,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:34 BoogieIcfgContainer [2019-10-22 08:58:34,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:34,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:58:34,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:58:34,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:58:34,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:58:33" (1/3) ... [2019-10-22 08:58:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1307a86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:34, skipping insertion in model container [2019-10-22 08:58:34,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:33" (2/3) ... [2019-10-22 08:58:34,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1307a86b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:58:34, skipping insertion in model container [2019-10-22 08:58:34,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:34" (3/3) ... [2019-10-22 08:58:34,426 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2019-10-22 08:58:34,433 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:58:34,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:58:34,453 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:58:34,474 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:58:34,474 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:58:34,475 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:58:34,475 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:34,475 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:34,475 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:58:34,475 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:34,475 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:58:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-22 08:58:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:58:34,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:34,490 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:34,492 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:34,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2019-10-22 08:58:34,502 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:58:34,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740380087] [2019-10-22 08:58:34,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 [2019-10-22 08:58:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:34,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 08:58:34,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:34,584 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:58:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:34,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740380087] [2019-10-22 08:58:34,589 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:34,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 08:58:34,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462509556] [2019-10-22 08:58:34,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:58:34,594 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:58:34,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:58:34,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:58:34,606 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-10-22 08:58:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:34,622 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-10-22 08:58:34,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:58:34,623 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 08:58:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:34,634 INFO L225 Difference]: With dead ends: 56 [2019-10-22 08:58:34,635 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 08:58:34,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:58:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 08:58:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-22 08:58:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:58:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-10-22 08:58:34,670 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2019-10-22 08:58:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:34,670 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-10-22 08:58:34,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:58:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-10-22 08:58:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:58:34,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:34,671 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:34,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 08:58:34,872 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:34,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2019-10-22 08:58:34,873 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:58:34,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927367945] [2019-10-22 08:58:34,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/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 [2019-10-22 08:58:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:34,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:58:34,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:35,074 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:58:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:35,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927367945] [2019-10-22 08:58:35,181 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:35,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 08:58:35,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680627755] [2019-10-22 08:58:35,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:58:35,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:58:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:35,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:35,184 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2019-10-22 08:58:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:35,309 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-10-22 08:58:35,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:58:35,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-10-22 08:58:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:58:35,311 INFO L225 Difference]: With dead ends: 34 [2019-10-22 08:58:35,311 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 08:58:35,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:58:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 08:58:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 08:58:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 08:58:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-10-22 08:58:35,319 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2019-10-22 08:58:35,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:58:35,320 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-10-22 08:58:35,320 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:58:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-10-22 08:58:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:58:35,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:58:35,320 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:58:35,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 08:58:35,521 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:58:35,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2019-10-22 08:58:35,522 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:58:35,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448332466] [2019-10-22 08:58:35,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d50d9d9-e6d1-4e07-8c62-892cae8d496a/bin/uautomizer/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 [2019-10-22 08:58:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:35,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:58:35,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:35,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 08:58:35,933 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) [2019-10-22 08:58:35,938 INFO L168 Benchmark]: Toolchain (without parser) took 2374.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -74.6 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:35,939 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:35,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 936.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:35,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:35,940 INFO L168 Benchmark]: Boogie Preprocessor took 36.52 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. [2019-10-22 08:58:35,941 INFO L168 Benchmark]: RCFGBuilder took 410.72 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:35,941 INFO L168 Benchmark]: TraceAbstraction took 1518.31 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: 72.2 MB). Peak memory consumption was 72.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:35,946 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 936.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 130.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.52 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 410.72 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1518.31 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: 72.2 MB). Peak memory consumption was 72.2 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...