./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/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 c714d208cb0b1f96f572e8a6108248eb76c73a94 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/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 c714d208cb0b1f96f572e8a6108248eb76c73a94 ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:40:39,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:40:39,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:40:39,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:40:39,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:40:39,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:40:39,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:40:39,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:40:39,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:40:39,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:40:39,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:40:39,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:40:39,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:40:39,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:40:39,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:40:39,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:40:39,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:40:39,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:40:39,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:40:39,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:40:39,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:40:39,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:40:39,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:40:39,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:40:39,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:40:39,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:40:39,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:40:39,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:40:39,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:40:39,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:40:39,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:40:39,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:40:39,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:40:39,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:40:39,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:40:39,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:40:39,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:40:39,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:40:39,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:40:39,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:40:39,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:40:39,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:40:39,374 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:40:39,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:40:39,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:40:39,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:40:39,387 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:40:39,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:40:39,388 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:40:39,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:40:39,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:40:39,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:40:39,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:40:39,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:40:39,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:40:39,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:40:39,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:40:39,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:40:39,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:40:39,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:40:39,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:40:39,392 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:40:39,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:40:39,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:40:39,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:40:39,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:40:39,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:40:39,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:40:39,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:40:39,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:40:39,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/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 -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2019-11-15 22:40:39,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:40:39,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:40:39,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:40:39,441 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:40:39,442 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:40:39,442 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-15 22:40:39,519 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/713b21e55/2791341479e94aeaa93b9f01b901a096/FLAG216c45a79 [2019-11-15 22:40:39,886 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:40:39,887 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-15 22:40:39,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/713b21e55/2791341479e94aeaa93b9f01b901a096/FLAG216c45a79 [2019-11-15 22:40:40,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/713b21e55/2791341479e94aeaa93b9f01b901a096 [2019-11-15 22:40:40,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:40:40,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:40:40,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:40,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:40:40,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:40:40,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55162313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40, skipping insertion in model container [2019-11-15 22:40:40,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,353 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:40:40,374 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:40:40,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:40,660 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:40:40,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:40,712 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:40:40,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40 WrapperNode [2019-11-15 22:40:40,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:40,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:40,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:40:40,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:40:40,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:40,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:40:40,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:40:40,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:40:40,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... [2019-11-15 22:40:40,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:40:40,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:40:40,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:40:40,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:40:40,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:40:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:40:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 22:40:40,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:40:40,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:40:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:40:40,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:40:41,240 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:40:41,240 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 22:40:41,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:41 BoogieIcfgContainer [2019-11-15 22:40:41,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:40:41,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:40:41,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:40:41,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:40:41,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:40:40" (1/3) ... [2019-11-15 22:40:41,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7a7527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:41, skipping insertion in model container [2019-11-15 22:40:41,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:40" (2/3) ... [2019-11-15 22:40:41,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7a7527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:41, skipping insertion in model container [2019-11-15 22:40:41,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:41" (3/3) ... [2019-11-15 22:40:41,249 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2019-11-15 22:40:41,258 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:40:41,269 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:40:41,282 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:40:41,308 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:40:41,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:40:41,311 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:40:41,311 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:40:41,311 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:40:41,311 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:40:41,312 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:40:41,312 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:40:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 22:40:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:40:41,335 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:41,335 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:41,337 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-15 22:40:41,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:41,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915790848] [2019-11-15 22:40:41,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:41,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915790848] [2019-11-15 22:40:41,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:41,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:40:41,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822050773] [2019-11-15 22:40:41,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:40:41,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:41,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:40:41,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:40:41,469 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-15 22:40:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:41,484 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-15 22:40:41,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:40:41,486 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 22:40:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:41,496 INFO L225 Difference]: With dead ends: 56 [2019-11-15 22:40:41,496 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 22:40:41,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:40:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 22:40:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 22:40:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 22:40:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-15 22:40:41,527 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-15 22:40:41,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:41,528 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-15 22:40:41,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:40:41,528 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-15 22:40:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:40:41,529 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:41,529 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:41,529 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-15 22:40:41,530 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:41,530 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673517067] [2019-11-15 22:40:41,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:41,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673517067] [2019-11-15 22:40:41,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:41,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:40:41,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344462541] [2019-11-15 22:40:41,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:40:41,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:41,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:40:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:40:41,610 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-11-15 22:40:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:41,686 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-15 22:40:41,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:40:41,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-15 22:40:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:41,688 INFO L225 Difference]: With dead ends: 40 [2019-11-15 22:40:41,688 INFO L226 Difference]: Without dead ends: 36 [2019-11-15 22:40:41,689 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:40:41,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-15 22:40:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-15 22:40:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 22:40:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-15 22:40:41,694 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-15 22:40:41,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:41,695 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-15 22:40:41,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:40:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-15 22:40:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:40:41,696 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:41,696 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:41,696 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2019-11-15 22:40:41,697 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:41,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353481270] [2019-11-15 22:40:41,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,697 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:41,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353481270] [2019-11-15 22:40:41,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:41,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:40:41,758 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277120413] [2019-11-15 22:40:41,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:40:41,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:40:41,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:40:41,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:40:41,759 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2019-11-15 22:40:41,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:41,824 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-11-15 22:40:41,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:40:41,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-15 22:40:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:41,826 INFO L225 Difference]: With dead ends: 42 [2019-11-15 22:40:41,826 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 22:40:41,826 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:40:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 22:40:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-11-15 22:40:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 22:40:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-15 22:40:41,831 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2019-11-15 22:40:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:41,831 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-15 22:40:41,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:40:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-15 22:40:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:40:41,832 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:41,832 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:41,833 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:41,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-15 22:40:41,833 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:40:41,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082014585] [2019-11-15 22:40:41,833 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:40:41,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:40:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:40:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:40:41,933 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:40:41,933 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:40:41,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:40:41 BoogieIcfgContainer [2019-11-15 22:40:41,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:40:41,959 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:40:41,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:40:41,960 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:40:41,960 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:41" (3/4) ... [2019-11-15 22:40:41,963 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 22:40:41,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:40:41,965 INFO L168 Benchmark]: Toolchain (without parser) took 1627.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:41,966 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:41,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:41,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:41,967 INFO L168 Benchmark]: Boogie Preprocessor took 32.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:41,968 INFO L168 Benchmark]: RCFGBuilder took 453.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:41,969 INFO L168 Benchmark]: TraceAbstraction took 716.09 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:41,969 INFO L168 Benchmark]: Witness Printer took 4.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:41,972 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 374.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.14 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 453.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 716.09 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.18 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: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; [L16] return x != x; [L62] COND TRUE !isnan_double(x) [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x [L68] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 20 SDslu, 112 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 22:40:44,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:40:44,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:40:44,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:40:44,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:40:44,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:40:44,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:40:44,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:40:44,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:40:44,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:40:44,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:40:44,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:40:44,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:40:44,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:40:44,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:40:44,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:40:44,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:40:44,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:40:44,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:40:44,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:40:44,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:40:44,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:40:44,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:40:44,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:40:44,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:40:44,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:40:44,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:40:44,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:40:44,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:40:44,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:40:44,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:40:44,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:40:44,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:40:44,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:40:44,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:40:44,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:40:44,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:40:44,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:40:44,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:40:44,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:40:44,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:40:44,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 22:40:44,222 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:40:44,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:40:44,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:40:44,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:40:44,224 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:40:44,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:40:44,224 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:40:44,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:40:44,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:40:44,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:40:44,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:40:44,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:40:44,226 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 22:40:44,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 22:40:44,226 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:40:44,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:40:44,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:40:44,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:40:44,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:40:44,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:40:44,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:40:44,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:40:44,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:40:44,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:40:44,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:40:44,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:40:44,229 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 22:40:44,229 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 22:40:44,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:40:44,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 22:40:44,230 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/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 -> c714d208cb0b1f96f572e8a6108248eb76c73a94 [2019-11-15 22:40:44,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:40:44,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:40:44,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:40:44,296 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:40:44,305 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:40:44,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-15 22:40:44,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/8c2ea4d5a/b866a1bcd8bf40529a9b80c5b829ffd7/FLAGfb2ee4fae [2019-11-15 22:40:44,731 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:40:44,732 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2019-11-15 22:40:44,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/8c2ea4d5a/b866a1bcd8bf40529a9b80c5b829ffd7/FLAGfb2ee4fae [2019-11-15 22:40:45,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/data/8c2ea4d5a/b866a1bcd8bf40529a9b80c5b829ffd7 [2019-11-15 22:40:45,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:40:45,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:40:45,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:45,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:40:45,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:40:45,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c3f0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45, skipping insertion in model container [2019-11-15 22:40:45,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,185 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:40:45,202 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:40:45,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:45,431 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:40:45,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:40:45,580 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:40:45,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45 WrapperNode [2019-11-15 22:40:45,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:40:45,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:45,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:40:45,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:40:45,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:40:45,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:40:45,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:40:45,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:40:45,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... [2019-11-15 22:40:45,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:40:45,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:40:45,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:40:45,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:40:45,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:40:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 22:40:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:40:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 22:40:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:40:45,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:40:45,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:40:46,150 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:40:46,150 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 22:40:46,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:46 BoogieIcfgContainer [2019-11-15 22:40:46,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:40:46,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:40:46,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:40:46,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:40:46,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:40:45" (1/3) ... [2019-11-15 22:40:46,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9b2489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:46, skipping insertion in model container [2019-11-15 22:40:46,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:40:45" (2/3) ... [2019-11-15 22:40:46,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9b2489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:40:46, skipping insertion in model container [2019-11-15 22:40:46,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:40:46" (3/3) ... [2019-11-15 22:40:46,160 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2019-11-15 22:40:46,168 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:40:46,175 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:40:46,186 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:40:46,208 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:40:46,208 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:40:46,209 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:40:46,209 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:40:46,209 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:40:46,209 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:40:46,209 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:40:46,209 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:40:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 22:40:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:40:46,228 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:46,229 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:46,231 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:46,236 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-15 22:40:46,243 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:40:46,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350257550] [2019-11-15 22:40:46,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-15 22:40:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 22:40:46,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:46,350 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:40:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:46,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350257550] [2019-11-15 22:40:46,354 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:46,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 22:40:46,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777485717] [2019-11-15 22:40:46,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:40:46,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:40:46,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:40:46,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:40:46,371 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-15 22:40:46,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:46,386 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-15 22:40:46,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:40:46,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 22:40:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:46,397 INFO L225 Difference]: With dead ends: 56 [2019-11-15 22:40:46,397 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 22:40:46,400 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 [2019-11-15 22:40:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 22:40:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 22:40:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 22:40:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-15 22:40:46,434 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-15 22:40:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:46,434 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-15 22:40:46,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:40:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-15 22:40:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:40:46,435 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:46,435 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:46,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 22:40:46,646 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-15 22:40:46,647 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:40:46,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089157606] [2019-11-15 22:40:46,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-15 22:40:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:46,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 22:40:46,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:46,785 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 22:40:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:40:46,819 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089157606] [2019-11-15 22:40:46,819 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:40:46,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 22:40:46,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444560241] [2019-11-15 22:40:46,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:40:46,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 22:40:46,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:40:46,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:40:46,822 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-11-15 22:40:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:40:46,977 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2019-11-15 22:40:46,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:40:46,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 22:40:46,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:40:46,981 INFO L225 Difference]: With dead ends: 50 [2019-11-15 22:40:46,981 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 22:40:46,983 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:40:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 22:40:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-11-15 22:40:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 22:40:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-15 22:40:46,993 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-15 22:40:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:40:46,994 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-15 22:40:46,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:40:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-15 22:40:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:40:46,997 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:40:46,998 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:40:47,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 22:40:47,209 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:40:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:40:47,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-15 22:40:47,211 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 22:40:47,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248611384] [2019-11-15 22:40:47,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9e98ef80-19b7-4d5a-97f6-0bf561de8684/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 [2019-11-15 22:40:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:40:47,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 22:40:47,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:40:47,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 22:40:47,636 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 22:40:47,641 INFO L168 Benchmark]: Toolchain (without parser) took 2469.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -69.7 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:47,641 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:47,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:47,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:47,643 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:40:47,644 INFO L168 Benchmark]: RCFGBuilder took 493.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:47,646 INFO L168 Benchmark]: TraceAbstraction took 1485.90 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: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:40:47,656 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 410.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.43 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 493.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1485.90 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: 70.1 MB). Peak memory consumption was 70.1 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...