./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ............................................................................................................................................................................................................................................................................................. 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_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ...................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:01:49,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:49,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:49,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:49,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:49,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:49,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:49,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:49,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:49,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:49,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:49,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:49,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:49,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:49,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:49,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:49,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:49,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:49,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:49,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:49,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:49,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:49,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:49,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:49,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:49,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:49,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:49,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:49,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:49,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:49,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:49,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:49,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:49,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:49,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:49,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:49,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:49,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:49,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:49,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:49,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:49,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:01:49,291 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:49,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:49,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:49,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:49,302 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:49,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:49,302 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:49,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:49,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:49,303 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:49,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:49,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:49,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:49,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:49,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:49,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:49,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:49,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:49,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:49,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:49,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:49,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:49,306 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_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-10-22 09:01:49,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:49,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:49,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:49,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:49,356 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:49,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-10-22 09:01:49,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/35bfeba87/d636ba112cca4864a69ead5eefb4f682/FLAGa984c442b [2019-10-22 09:01:49,815 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:49,815 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-10-22 09:01:49,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/35bfeba87/d636ba112cca4864a69ead5eefb4f682/FLAGa984c442b [2019-10-22 09:01:49,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/35bfeba87/d636ba112cca4864a69ead5eefb4f682 [2019-10-22 09:01:49,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:49,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:49,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:49,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:49,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:49,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:49" (1/1) ... [2019-10-22 09:01:49,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5189c9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:49, skipping insertion in model container [2019-10-22 09:01:49,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:49" (1/1) ... [2019-10-22 09:01:49,854 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:49,873 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:50,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:50,061 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:50,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:50,185 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:50,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50 WrapperNode [2019-10-22 09:01:50,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:50,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:50,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:50,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:50,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:50,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:50,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:50,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:50,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... [2019-10-22 09:01:50,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:50,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:50,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:50,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:50,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 09:01:50,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 09:01:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:01:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 09:01:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:50,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:01:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:50,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:50,643 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:50,643 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 09:01:50,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:50 BoogieIcfgContainer [2019-10-22 09:01:50,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:50,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:50,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:50,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:50,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:49" (1/3) ... [2019-10-22 09:01:50,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8977e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:50, skipping insertion in model container [2019-10-22 09:01:50,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:50" (2/3) ... [2019-10-22 09:01:50,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8977e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:50, skipping insertion in model container [2019-10-22 09:01:50,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:50" (3/3) ... [2019-10-22 09:01:50,652 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-10-22 09:01:50,661 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:50,668 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:50,679 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:50,708 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:50,721 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:50,721 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:50,721 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:50,721 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:50,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:50,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:50,722 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-22 09:01:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:01:50,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:50,760 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:50,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:50,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:50,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-10-22 09:01:50,797 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:50,797 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767244365] [2019-10-22 09:01:50,797 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:50,797 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:50,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:50,919 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 09:01:50,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767244365] [2019-10-22 09:01:50,920 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:50,921 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:01:50,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177745263] [2019-10-22 09:01:50,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:01:50,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:50,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:01:50,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:01:50,944 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-10-22 09:01:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:50,964 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-10-22 09:01:50,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:01:50,967 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-22 09:01:50,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:50,976 INFO L225 Difference]: With dead ends: 74 [2019-10-22 09:01:50,976 INFO L226 Difference]: Without dead ends: 35 [2019-10-22 09:01:50,979 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 09:01:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-22 09:01:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-22 09:01:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 09:01:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-10-22 09:01:51,010 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-10-22 09:01:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:51,010 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-10-22 09:01:51,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:01:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-10-22 09:01:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 09:01:51,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:51,011 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:51,011 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-10-22 09:01:51,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:51,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704683955] [2019-10-22 09:01:51,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:51,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:51,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:51,104 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:51,104 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:01:51,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:51 BoogieIcfgContainer [2019-10-22 09:01:51,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:51,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:51,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:51,139 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:51,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:50" (3/4) ... [2019-10-22 09:01:51,143 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:01:51,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:51,144 INFO L168 Benchmark]: Toolchain (without parser) took 1304.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:51,145 INFO L168 Benchmark]: CDTParser took 0.16 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 09:01:51,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:51,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.16 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 09:01:51,146 INFO L168 Benchmark]: Boogie Preprocessor took 34.09 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 09:01:51,147 INFO L168 Benchmark]: RCFGBuilder took 383.38 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: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:51,147 INFO L168 Benchmark]: TraceAbstraction took 490.49 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:51,147 INFO L168 Benchmark]: Witness Printer took 4.26 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 09:01:51,150 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 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.16 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 34.09 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 383.38 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: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 490.49 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.26 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: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 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=38occurred 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 09:01:53,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:53,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:53,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:53,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:53,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:53,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:53,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:53,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:53,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:53,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:53,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:53,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:53,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:53,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:53,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:53,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:53,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:53,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:53,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:53,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:53,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:53,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:53,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:53,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:53,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:53,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:53,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:53,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:53,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:53,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:53,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:53,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:53,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:53,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:53,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:53,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:53,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:53,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:53,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:53,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:53,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 09:01:53,257 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:53,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:53,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:53,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:53,258 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:53,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:53,259 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:53,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:53,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:53,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:53,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:53,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:53,260 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:01:53,260 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:01:53,260 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:53,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:53,260 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:53,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:53,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:53,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:53,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:53,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:53,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:53,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:53,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:53,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:53,262 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:01:53,262 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:01:53,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:53,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:01:53,263 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_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-10-22 09:01:53,296 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:53,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:53,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:53,315 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:53,317 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:53,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-10-22 09:01:53,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/112e9076c/9c27d650da9b46f8b130e87304413720/FLAGcea9cb81e [2019-10-22 09:01:53,754 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:53,755 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-10-22 09:01:53,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/112e9076c/9c27d650da9b46f8b130e87304413720/FLAGcea9cb81e [2019-10-22 09:01:54,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/data/112e9076c/9c27d650da9b46f8b130e87304413720 [2019-10-22 09:01:54,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:54,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:54,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:54,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:54,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:54,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31625f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54, skipping insertion in model container [2019-10-22 09:01:54,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,138 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:54,156 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:54,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:54,314 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:54,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:54,399 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:54,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54 WrapperNode [2019-10-22 09:01:54,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:54,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:54,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:54,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:54,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:54,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:54,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:54,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:54,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... [2019-10-22 09:01:54,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:54,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:54,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:54,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:54,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 09:01:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 09:01:54,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 09:01:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 09:01:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 09:01:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:55,701 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:55,701 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 09:01:55,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:55 BoogieIcfgContainer [2019-10-22 09:01:55,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:55,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:55,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:55,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:55,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:54" (1/3) ... [2019-10-22 09:01:55,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a727434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:55, skipping insertion in model container [2019-10-22 09:01:55,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:54" (2/3) ... [2019-10-22 09:01:55,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a727434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:55, skipping insertion in model container [2019-10-22 09:01:55,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:55" (3/3) ... [2019-10-22 09:01:55,711 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-10-22 09:01:55,721 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:55,728 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:55,737 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:55,768 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:55,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:55,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:55,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:55,773 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:55,773 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:55,773 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:55,773 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-22 09:01:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:01:55,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:55,798 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:55,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-10-22 09:01:55,812 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:01:55,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364587967] [2019-10-22 09:01:55,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 09:01:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:55,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 09:01:55,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:55,888 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 09:01:55,888 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:01:55,891 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 09:01:55,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364587967] [2019-10-22 09:01:55,893 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:55,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 09:01:55,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703367658] [2019-10-22 09:01:55,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:01:55,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:01:55,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:01:55,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:01:55,911 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-10-22 09:01:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:55,930 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-10-22 09:01:55,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:01:55,931 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-22 09:01:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:55,943 INFO L225 Difference]: With dead ends: 74 [2019-10-22 09:01:55,943 INFO L226 Difference]: Without dead ends: 35 [2019-10-22 09:01:55,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 09:01:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-22 09:01:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-22 09:01:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 09:01:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-10-22 09:01:55,985 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-10-22 09:01:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:55,985 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-10-22 09:01:55,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:01:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-10-22 09:01:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 09:01:55,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:55,986 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:56,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 09:01:56,187 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:56,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:56,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-10-22 09:01:56,188 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:01:56,189 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329621546] [2019-10-22 09:01:56,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 09:01:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:56,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:01:56,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:56,361 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 09:01:56,361 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:01:56,443 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 09:01:56,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329621546] [2019-10-22 09:01:56,443 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:56,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 09:01:56,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373228112] [2019-10-22 09:01:56,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:56,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:01:56,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:56,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:56,447 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2019-10-22 09:01:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:56,826 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-10-22 09:01:56,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:01:56,829 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-10-22 09:01:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:56,830 INFO L225 Difference]: With dead ends: 59 [2019-10-22 09:01:56,832 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 09:01:56,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:56,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 09:01:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2019-10-22 09:01:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 09:01:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-22 09:01:56,842 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2019-10-22 09:01:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:56,843 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-22 09:01:56,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-22 09:01:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:01:56,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:56,845 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:57,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 09:01:57,046 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2019-10-22 09:01:57,047 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:01:57,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270824864] [2019-10-22 09:01:57,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/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 09:01:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:57,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:01:57,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:57,234 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 09:01:57,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:01:57,773 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-10-22 09:01:57,915 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 09:01:57,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270824864] [2019-10-22 09:01:57,916 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:57,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-10-22 09:01:57,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534299203] [2019-10-22 09:01:57,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:57,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:01:57,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:57,918 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-10-22 09:01:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:58,399 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-10-22 09:01:58,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:58,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-22 09:01:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:58,406 INFO L225 Difference]: With dead ends: 34 [2019-10-22 09:01:58,407 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 09:01:58,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 09:01:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-22 09:01:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 09:01:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-10-22 09:01:58,413 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2019-10-22 09:01:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:58,413 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-10-22 09:01:58,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-10-22 09:01:58,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:01:58,414 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:58,414 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:58,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 09:01:58,625 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2019-10-22 09:01:58,626 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:01:58,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890460677] [2019-10-22 09:01:58,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_99e61db0-b4a3-499a-9234-24fc4c2b35f4/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-10-22 09:01:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:58,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 09:01:58,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:59,036 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-10-22 09:01:59,037 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 09:01:59,040 INFO L168 Benchmark]: Toolchain (without parser) took 4920.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -69.0 MB). Peak memory consumption was 85.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:59,042 INFO L168 Benchmark]: CDTParser took 0.18 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 09:01:59,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.89 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 932.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:59,044 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:59,045 INFO L168 Benchmark]: Boogie Preprocessor took 60.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:59,045 INFO L168 Benchmark]: RCFGBuilder took 1117.62 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:59,046 INFO L168 Benchmark]: TraceAbstraction took 3335.10 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: 99.6 MB). Peak memory consumption was 99.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:59,048 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 278.89 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 932.2 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 50.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1117.62 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3335.10 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: 99.6 MB). Peak memory consumption was 99.6 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...