./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 788527977e7ebd7aa0a832758f41b65d3cbd270a ............................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 788527977e7ebd7aa0a832758f41b65d3cbd270a .......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:42,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:42,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:42,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:42,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:42,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:42,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:42,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:42,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:42,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:42,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:42,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:42,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:42,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:42,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:42,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:42,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:42,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:42,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:42,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:42,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:42,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:42,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:42,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:42,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:42,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:42,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:42,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:42,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:42,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:42,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:42,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:42,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:42,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:42,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:42,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:42,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:42,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:42,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:42,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:42,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:42,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:42,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:42,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:42,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:42,873 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:42,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:42,873 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:42,873 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:42,874 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:42,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:42,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:42,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:42,874 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:42,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:42,875 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:42,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:42,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:42,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:42,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:42,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:42,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:42,876 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:42,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:42,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:42,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:42,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:42,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:42,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:42,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:42,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:42,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:42,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:42,883 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:42,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:42,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:42,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:42,884 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan 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 -> Taipan 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 -> 788527977e7ebd7aa0a832758f41b65d3cbd270a [2019-10-22 11:24:42,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:42,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:42,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:42,929 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:42,930 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:42,930 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-10-22 11:24:42,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/54168a90a/2b3c595bd90546d79ba7b8318dd9f54a/FLAGc653c6cce [2019-10-22 11:24:43,400 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:43,402 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-10-22 11:24:43,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/54168a90a/2b3c595bd90546d79ba7b8318dd9f54a/FLAGc653c6cce [2019-10-22 11:24:43,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/54168a90a/2b3c595bd90546d79ba7b8318dd9f54a [2019-10-22 11:24:43,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:43,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:43,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:43,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:43,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:43,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:43" (1/1) ... [2019-10-22 11:24:43,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a002bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:43, skipping insertion in model container [2019-10-22 11:24:43,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:43" (1/1) ... [2019-10-22 11:24:43,799 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:43,820 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:44,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:44,154 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:44,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:44,217 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:44,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44 WrapperNode [2019-10-22 11:24:44,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:44,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:44,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:44,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:44,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:44,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:44,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:44,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:44,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... [2019-10-22 11:24:44,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:44,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:44,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:44,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:44,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:44,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:24:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:24:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 11:24:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:44,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:24:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:44,865 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:44,865 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 11:24:44,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:44 BoogieIcfgContainer [2019-10-22 11:24:44,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:44,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:44,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:44,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:44,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:43" (1/3) ... [2019-10-22 11:24:44,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:44, skipping insertion in model container [2019-10-22 11:24:44,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:44" (2/3) ... [2019-10-22 11:24:44,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:44, skipping insertion in model container [2019-10-22 11:24:44,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:44" (3/3) ... [2019-10-22 11:24:44,875 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2019-10-22 11:24:44,884 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:44,891 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:44,902 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:44,925 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:44,925 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:44,925 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:44,925 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:44,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:44,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:44,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:44,926 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:44,940 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-10-22 11:24:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:24:44,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:44,947 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:44,949 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:44,954 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-10-22 11:24:44,961 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:44,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944003692] [2019-10-22 11:24:44,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:44,962 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:44,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:45,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944003692] [2019-10-22 11:24:45,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:24:45,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147091680] [2019-10-22 11:24:45,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:45,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:45,092 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-10-22 11:24:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,110 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-10-22 11:24:45,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:45,111 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-10-22 11:24:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,121 INFO L225 Difference]: With dead ends: 104 [2019-10-22 11:24:45,121 INFO L226 Difference]: Without dead ends: 50 [2019-10-22 11:24:45,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-22 11:24:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-10-22 11:24:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 11:24:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-10-22 11:24:45,159 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-10-22 11:24:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,159 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-10-22 11:24:45,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-10-22 11:24:45,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:45,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,160 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:45,160 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,160 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-10-22 11:24:45,161 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794975726] [2019-10-22 11:24:45,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,161 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:45,233 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:24:45,233 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:45,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:45 BoogieIcfgContainer [2019-10-22 11:24:45,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:45,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:45,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:45,264 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:45,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:44" (3/4) ... [2019-10-22 11:24:45,268 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:24:45,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:45,270 INFO L168 Benchmark]: Toolchain (without parser) took 1484.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,271 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:45,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 949.9 MB in the beginning and 1.2 GB in the end (delta: -232.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,272 INFO L168 Benchmark]: Boogie Preprocessor took 61.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:45,273 INFO L168 Benchmark]: RCFGBuilder took 518.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,273 INFO L168 Benchmark]: TraceAbstraction took 395.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,274 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:45,276 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 432.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.4 MB). Free memory was 949.9 MB in the beginning and 1.2 GB in the end (delta: -232.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 518.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 395.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.61 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: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 149, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryDOUBLEComparisonOperation at line 153. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L149] double x = -0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:47,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:47,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:47,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:47,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:47,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:47,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:47,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:47,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:47,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:47,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:47,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:47,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:47,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:47,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:47,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:47,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:47,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:47,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:47,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:47,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:47,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:47,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:47,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:47,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:47,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:47,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:47,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:47,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:47,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:47,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:47,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:47,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:47,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:47,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:47,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:47,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:47,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:47,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:47,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:47,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:47,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:47,309 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:47,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:47,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:47,310 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:47,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:47,311 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:47,311 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:47,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:47,311 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:47,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:47,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:47,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:47,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:47,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:47,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:47,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:47,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:47,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:47,314 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:47,314 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:47,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:47,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:47,315 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan 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 -> Taipan 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 -> 788527977e7ebd7aa0a832758f41b65d3cbd270a [2019-10-22 11:24:47,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:47,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:47,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:47,362 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:47,362 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:47,363 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-10-22 11:24:47,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/7a788d9f3/5fcc491d2cd645ef883045c46670f6a8/FLAGbf3b179ea [2019-10-22 11:24:47,791 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:47,791 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2019-10-22 11:24:47,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/7a788d9f3/5fcc491d2cd645ef883045c46670f6a8/FLAGbf3b179ea [2019-10-22 11:24:47,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/data/7a788d9f3/5fcc491d2cd645ef883045c46670f6a8 [2019-10-22 11:24:47,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:47,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:47,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:47,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:47,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:47,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:47" (1/1) ... [2019-10-22 11:24:47,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0f6049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:47, skipping insertion in model container [2019-10-22 11:24:47,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:47" (1/1) ... [2019-10-22 11:24:47,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:47,845 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:48,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:48,046 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:48,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:48,193 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:48,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48 WrapperNode [2019-10-22 11:24:48,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:48,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:48,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:48,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:48,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:48,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:48,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:48,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:48,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:48,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:48,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:48,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:48,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 11:24:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 11:24:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:24:48,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:24:48,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:48,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:24:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:24:51,761 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:51,761 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 11:24:51,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:51 BoogieIcfgContainer [2019-10-22 11:24:51,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:51,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:51,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:51,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:51,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:47" (1/3) ... [2019-10-22 11:24:51,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bd4689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:51, skipping insertion in model container [2019-10-22 11:24:51,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48" (2/3) ... [2019-10-22 11:24:51,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60bd4689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:51, skipping insertion in model container [2019-10-22 11:24:51,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:51" (3/3) ... [2019-10-22 11:24:51,769 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2019-10-22 11:24:51,778 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:51,785 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:24:51,793 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:51,809 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:51,809 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:51,809 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:51,809 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:51,809 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:51,809 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:51,809 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:51,810 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-10-22 11:24:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:24:51,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:51,825 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:51,826 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:51,830 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-10-22 11:24:51,839 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:51,839 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378782089] [2019-10-22 11:24:51,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-10-22 11:24:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:24:52,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,233 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378782089] [2019-10-22 11:24:52,238 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:52,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:24:52,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326765353] [2019-10-22 11:24:52,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:52,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:52,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:52,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:52,254 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-10-22 11:24:52,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:52,272 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-10-22 11:24:52,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:52,274 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-10-22 11:24:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:52,282 INFO L225 Difference]: With dead ends: 104 [2019-10-22 11:24:52,283 INFO L226 Difference]: Without dead ends: 50 [2019-10-22 11:24:52,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-22 11:24:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-10-22 11:24:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 11:24:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-10-22 11:24:52,318 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-10-22 11:24:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:52,318 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-10-22 11:24:52,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-10-22 11:24:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:24:52,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:52,319 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:52,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:24:52,527 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-10-22 11:24:52,528 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:52,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566432383] [2019-10-22 11:24:52,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-10-22 11:24:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:52,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:52,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:52,999 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:53,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566432383] [2019-10-22 11:24:53,046 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:53,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:24:53,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019822053] [2019-10-22 11:24:53,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:53,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:53,049 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2019-10-22 11:24:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,655 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2019-10-22 11:24:54,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:54,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-10-22 11:24:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,975 INFO L225 Difference]: With dead ends: 59 [2019-10-22 11:24:54,975 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 11:24:54,976 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 11:24:54,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 11:24:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:24:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 11:24:54,980 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-10-22 11:24:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,980 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 11:24:54,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 11:24:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 11:24:54,981 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,981 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:55,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 11:24:55,182 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2019-10-22 11:24:55,183 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:55,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152593785] [2019-10-22 11:24:55,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-10-22 11:24:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:55,312 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:55,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:24:55,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152593785] [2019-10-22 11:24:55,346 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-10-22 11:24:55,347 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209484946] [2019-10-22 11:24:55,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:24:55,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:55,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:24:55,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:55,348 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2019-10-22 11:24:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:56,600 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-10-22 11:24:56,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:56,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-10-22 11:24:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:56,602 INFO L225 Difference]: With dead ends: 29 [2019-10-22 11:24:56,602 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 11:24:56,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 11:24:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2019-10-22 11:24:56,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 11:24:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-22 11:24:56,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2019-10-22 11:24:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:56,608 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-22 11:24:56,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:24:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-22 11:24:56,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 11:24:56,608 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:56,609 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:56,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 11:24:56,818 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2019-10-22 11:24:56,819 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:56,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916867478] [2019-10-22 11:24:56,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d1c19f0-2be7-4b16-89b9-bc956ca12811/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-10-22 11:24:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:57,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:24:57,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:58,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-10-22 11:24:58,004 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:24:58,009 INFO L168 Benchmark]: Toolchain (without parser) took 10195.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -71.6 MB). Peak memory consumption was 95.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,009 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:58,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -204.1 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:58,011 INFO L168 Benchmark]: Boogie Preprocessor took 36.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:58,012 INFO L168 Benchmark]: RCFGBuilder took 3487.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,012 INFO L168 Benchmark]: TraceAbstraction took 6243.61 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: 96.9 MB). Peak memory consumption was 96.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:58,015 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -204.1 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3487.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6243.61 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: 96.9 MB). Peak memory consumption was 96.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...