./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.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_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/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 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ...................................................................................................................................................................................................................................................................................................................................................................... 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_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/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 26bba4d307ba1cab1a3fe043c826d85928a7cf56 ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:36:41,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:36:41,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:36:41,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:36:41,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:36:41,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:36:41,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:36:41,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:36:41,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:36:41,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:36:41,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:36:41,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:36:41,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:36:41,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:36:41,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:36:41,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:36:41,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:36:41,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:36:41,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:36:41,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:36:41,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:36:41,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:36:41,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:36:41,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:36:41,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:36:41,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:36:41,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:36:41,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:36:41,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:36:41,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:36:41,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:36:41,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:36:41,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:36:41,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:36:41,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:36:41,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:36:41,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:36:41,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:36:41,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:36:41,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:36:41,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:36:41,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:36:41,555 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:36:41,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:36:41,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:36:41,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:36:41,559 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:36:41,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:36:41,559 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:36:41,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:36:41,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:36:41,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:36:41,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:36:41,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:36:41,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:36:41,562 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:36:41,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:36:41,562 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:36:41,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:36:41,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:36:41,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:36:41,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:36:41,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:36:41,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:36:41,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:36:41,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:36:41,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:36:41,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:36:41,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:36:41,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:36:41,565 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_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2019-11-15 23:36:41,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:36:41,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:36:41,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:36:41,622 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:36:41,623 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:36:41,624 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-15 23:36:41,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/6f19629a2/f5c0cdb4af644db69b7da7a24fbe3b8f/FLAGa836b9cb2 [2019-11-15 23:36:42,048 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:36:42,048 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-15 23:36:42,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/6f19629a2/f5c0cdb4af644db69b7da7a24fbe3b8f/FLAGa836b9cb2 [2019-11-15 23:36:42,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/6f19629a2/f5c0cdb4af644db69b7da7a24fbe3b8f [2019-11-15 23:36:42,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:36:42,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:36:42,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:36:42,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:36:42,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:36:42,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55009174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42, skipping insertion in model container [2019-11-15 23:36:42,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,489 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:36:42,506 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:36:42,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:36:42,706 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:36:42,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:36:42,748 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:36:42,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42 WrapperNode [2019-11-15 23:36:42,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:36:42,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:36:42,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:36:42,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:36:42,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:36:42,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:36:42,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:36:42,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:36:42,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... [2019-11-15 23:36:42,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:36:42,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:36:42,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:36:42,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:36:42,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:36:42,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:36:42,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:36:42,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:36:42,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:36:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:36:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:36:43,294 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:36:43,294 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 23:36:43,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:43 BoogieIcfgContainer [2019-11-15 23:36:43,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:36:43,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:36:43,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:36:43,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:36:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:36:42" (1/3) ... [2019-11-15 23:36:43,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595872a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:36:43, skipping insertion in model container [2019-11-15 23:36:43,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:42" (2/3) ... [2019-11-15 23:36:43,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595872a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:36:43, skipping insertion in model container [2019-11-15 23:36:43,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:43" (3/3) ... [2019-11-15 23:36:43,303 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2019-11-15 23:36:43,312 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:36:43,318 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:36:43,328 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:36:43,349 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:36:43,349 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:36:43,349 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:36:43,350 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:36:43,350 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:36:43,350 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:36:43,350 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:36:43,350 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:36:43,361 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 23:36:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:36:43,367 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:43,368 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:43,370 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:43,375 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-15 23:36:43,383 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:43,383 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135885324] [2019-11-15 23:36:43,383 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,383 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:43,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135885324] [2019-11-15 23:36:43,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:36:43,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:36:43,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892311354] [2019-11-15 23:36:43,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:36:43,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:36:43,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:36:43,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:36:43,509 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-15 23:36:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:36:43,527 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-15 23:36:43,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:36:43,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 23:36:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:36:43,537 INFO L225 Difference]: With dead ends: 56 [2019-11-15 23:36:43,538 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:36:43,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:36:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:36:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 23:36:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:36:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-15 23:36:43,573 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-15 23:36:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:36:43,573 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-15 23:36:43,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:36:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-15 23:36:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:36:43,574 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:43,574 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:43,574 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:43,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:43,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-15 23:36:43,575 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:43,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759232375] [2019-11-15 23:36:43,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,576 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:43,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759232375] [2019-11-15 23:36:43,673 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:36:43,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:36:43,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652855368] [2019-11-15 23:36:43,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:36:43,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:36:43,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:36:43,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:36:43,677 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2019-11-15 23:36:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:36:43,778 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-15 23:36:43,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:36:43,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-15 23:36:43,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:36:43,780 INFO L225 Difference]: With dead ends: 40 [2019-11-15 23:36:43,780 INFO L226 Difference]: Without dead ends: 36 [2019-11-15 23:36:43,781 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 23:36:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-15 23:36:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-15 23:36:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:36:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-15 23:36:43,788 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-15 23:36:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:36:43,789 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-15 23:36:43,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:36:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-15 23:36:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:36:43,791 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:43,791 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:43,792 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:43,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:43,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2019-11-15 23:36:43,793 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:43,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201302504] [2019-11-15 23:36:43,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:43,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201302504] [2019-11-15 23:36:43,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:36:43,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:36:43,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568179104] [2019-11-15 23:36:43,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:36:43,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:36:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:36:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:36:43,896 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2019-11-15 23:36:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:36:43,945 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2019-11-15 23:36:43,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:36:43,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-15 23:36:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:36:43,946 INFO L225 Difference]: With dead ends: 42 [2019-11-15 23:36:43,946 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 23:36:43,947 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 23:36:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 23:36:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2019-11-15 23:36:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:36:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-15 23:36:43,952 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2019-11-15 23:36:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:36:43,952 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-15 23:36:43,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:36:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-15 23:36:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:36:43,953 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:43,953 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:43,954 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:43,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-15 23:36:43,954 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:36:43,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794515817] [2019-11-15 23:36:43,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:36:43,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:36:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:36:44,018 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:36:44,018 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:36:44,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:36:44 BoogieIcfgContainer [2019-11-15 23:36:44,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:36:44,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:36:44,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:36:44,044 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:36:44,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:43" (3/4) ... [2019-11-15 23:36:44,047 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:36:44,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:36:44,049 INFO L168 Benchmark]: Toolchain (without parser) took 1575.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -59.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:44,049 INFO L168 Benchmark]: CDTParser took 0.22 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 23:36:44,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -137.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:44,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:44,051 INFO L168 Benchmark]: Boogie Preprocessor took 29.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:44,052 INFO L168 Benchmark]: RCFGBuilder took 476.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:44,053 INFO L168 Benchmark]: TraceAbstraction took 746.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:44,053 INFO L168 Benchmark]: Witness Printer took 3.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:44,056 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 274.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -137.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 476.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 746.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.9 MB). Peak memory consumption was 48.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L16] return x != x; [L72] COND TRUE !isnan_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __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: 0.2s, 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, 0.1s 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 23:36:46,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:36:46,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:36:46,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:36:46,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:36:46,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:36:46,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:36:46,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:36:46,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:36:46,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:36:46,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:36:46,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:36:46,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:36:46,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:36:46,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:36:46,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:36:46,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:36:46,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:36:46,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:36:46,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:36:46,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:36:46,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:36:46,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:36:46,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:36:46,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:36:46,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:36:46,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:36:46,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:36:46,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:36:46,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:36:46,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:36:46,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:36:46,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:36:46,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:36:46,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:36:46,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:36:46,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:36:46,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:36:46,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:36:46,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:36:46,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:36:46,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:36:46,193 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:36:46,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:36:46,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:36:46,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:36:46,195 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:36:46,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:36:46,196 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:36:46,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:36:46,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:36:46,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:36:46,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:36:46,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:36:46,197 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:36:46,197 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:36:46,197 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:36:46,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:36:46,198 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:36:46,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:36:46,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:36:46,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:36:46,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:36:46,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:36:46,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:36:46,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:36:46,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:36:46,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:36:46,200 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:36:46,200 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:36:46,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:36:46,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:36:46,200 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_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/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 -> 26bba4d307ba1cab1a3fe043c826d85928a7cf56 [2019-11-15 23:36:46,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:36:46,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:36:46,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:36:46,260 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:36:46,260 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:36:46,261 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-15 23:36:46,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/fe2196d3f/e63c72457bd148d5a4204798cbe30957/FLAGb76190a0e [2019-11-15 23:36:46,710 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:36:46,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2019-11-15 23:36:46,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/fe2196d3f/e63c72457bd148d5a4204798cbe30957/FLAGb76190a0e [2019-11-15 23:36:47,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/data/fe2196d3f/e63c72457bd148d5a4204798cbe30957 [2019-11-15 23:36:47,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:36:47,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:36:47,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:36:47,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:36:47,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:36:47,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e767c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47, skipping insertion in model container [2019-11-15 23:36:47,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,092 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:36:47,108 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:36:47,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:36:47,260 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:36:47,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:36:47,369 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:36:47,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47 WrapperNode [2019-11-15 23:36:47,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:36:47,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:36:47,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:36:47,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:36:47,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:36:47,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:36:47,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:36:47,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:36:47,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... [2019-11-15 23:36:47,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:36:47,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:36:47,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:36:47,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:36:47,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:36:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 23:36:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:36:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:36:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:36:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:36:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:36:47,947 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:36:47,948 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 23:36:47,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:47 BoogieIcfgContainer [2019-11-15 23:36:47,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:36:47,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:36:47,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:36:47,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:36:47,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:36:47" (1/3) ... [2019-11-15 23:36:47,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36183ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:36:47, skipping insertion in model container [2019-11-15 23:36:47,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:36:47" (2/3) ... [2019-11-15 23:36:47,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36183ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:36:47, skipping insertion in model container [2019-11-15 23:36:47,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:36:47" (3/3) ... [2019-11-15 23:36:47,954 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2019-11-15 23:36:47,962 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:36:47,969 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:36:47,978 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:36:47,999 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:36:48,000 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:36:48,000 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:36:48,000 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:36:48,000 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:36:48,000 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:36:48,000 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:36:48,000 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:36:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 23:36:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:36:48,019 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:48,020 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:48,021 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:48,026 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2019-11-15 23:36:48,035 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:36:48,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028732076] [2019-11-15 23:36:48,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-15 23:36:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:48,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:36:48,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:48,124 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:36:48,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:48,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028732076] [2019-11-15 23:36:48,129 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:36:48,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:36:48,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775235294] [2019-11-15 23:36:48,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:36:48,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:36:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:36:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:36:48,145 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-11-15 23:36:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:36:48,158 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2019-11-15 23:36:48,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:36:48,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 23:36:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:36:48,169 INFO L225 Difference]: With dead ends: 56 [2019-11-15 23:36:48,169 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:36:48,172 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 23:36:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:36:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 23:36:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:36:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2019-11-15 23:36:48,204 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2019-11-15 23:36:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:36:48,204 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2019-11-15 23:36:48,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:36:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2019-11-15 23:36:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:36:48,205 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:48,205 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:48,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:36:48,418 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:48,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2019-11-15 23:36:48,419 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:36:48,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896634304] [2019-11-15 23:36:48,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-15 23:36:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:48,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:36:48,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:48,534 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:36:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:36:48,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896634304] [2019-11-15 23:36:48,613 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:36:48,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:36:48,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152323954] [2019-11-15 23:36:48,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:36:48,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:36:48,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:36:48,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:36:48,616 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2019-11-15 23:36:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:36:48,756 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2019-11-15 23:36:48,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:36:48,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 23:36:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:36:48,758 INFO L225 Difference]: With dead ends: 50 [2019-11-15 23:36:48,759 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 23:36:48,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:36:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 23:36:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-11-15 23:36:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:36:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2019-11-15 23:36:48,766 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2019-11-15 23:36:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:36:48,766 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-15 23:36:48,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:36:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2019-11-15 23:36:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:36:48,767 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:36:48,768 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:36:48,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:36:48,981 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:36:48,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:36:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2019-11-15 23:36:48,982 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:36:48,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319668278] [2019-11-15 23:36:48,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cdcc5d29-af5a-40f1-95f9-f923b2924b9a/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 23:36:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:36:49,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 23:36:49,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:36:49,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:36:49,406 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 23:36:49,410 INFO L168 Benchmark]: Toolchain (without parser) took 2331.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -55.2 MB). Peak memory consumption was 56.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:49,411 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:49,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:49,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:49,412 INFO L168 Benchmark]: Boogie Preprocessor took 32.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:36:49,413 INFO L168 Benchmark]: RCFGBuilder took 503.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:49,413 INFO L168 Benchmark]: TraceAbstraction took 1458.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:36:49,416 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 290.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.02 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 503.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1458.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.4 MB). Peak memory consumption was 67.4 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...