./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0834.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_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0834.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 34004772e6a1e54917776a817538fd6c8fd28f94 ........................................................................................................................................................................................................................................................................................................................................ 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_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0834.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 34004772e6a1e54917776a817538fd6c8fd28f94 ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:23:41,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:41,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:41,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:41,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:41,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:41,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:41,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:41,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:41,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:41,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:41,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:41,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:41,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:41,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:41,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:41,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:41,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:41,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:41,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:41,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:41,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:41,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:41,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:41,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:41,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:41,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:41,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:41,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:41,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:41,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:41,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:41,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:41,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:41,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:41,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:41,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:41,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:41,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:41,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:41,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:41,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:41,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:41,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:41,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:41,156 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:41,157 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:41,157 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:41,157 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:41,157 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:41,157 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:41,158 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:41,158 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:41,158 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:41,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:41,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:41,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:41,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:41,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:41,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:41,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:41,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:41,160 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:41,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:41,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:41,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:41,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:41,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:41,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:41,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:41,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:41,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:41,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:41,168 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:41,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:41,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:41,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:41,169 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_a9510168-8d6c-4928-805e-ba405c9fd13f/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 -> 34004772e6a1e54917776a817538fd6c8fd28f94 [2019-10-22 11:23:41,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:41,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:41,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:41,226 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:41,227 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:41,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0834.c [2019-10-22 11:23:41,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/6cbf2d2b9/025864294b434121b8fdd6fc58065c85/FLAGa8a227485 [2019-10-22 11:23:41,718 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:41,718 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/sv-benchmarks/c/float-newlib/double_req_bl_0834.c [2019-10-22 11:23:41,724 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/6cbf2d2b9/025864294b434121b8fdd6fc58065c85/FLAGa8a227485 [2019-10-22 11:23:42,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/6cbf2d2b9/025864294b434121b8fdd6fc58065c85 [2019-10-22 11:23:42,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:42,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:42,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:42,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:42,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:42,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade499c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42, skipping insertion in model container [2019-10-22 11:23:42,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,154 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:42,174 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:42,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:42,437 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:42,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:42,504 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:42,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42 WrapperNode [2019-10-22 11:23:42,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:42,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:42,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:42,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:42,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:42,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:42,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:42,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:42,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... [2019-10-22 11:23:42,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:42,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:42,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:42,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:42,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 11:23:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:23:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:23:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 11:23:42,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:42,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:23:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-10-22 11:23:42,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:43,235 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:43,236 INFO L284 CfgBuilder]: Removed 22 assume(true) statements. [2019-10-22 11:23:43,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:43 BoogieIcfgContainer [2019-10-22 11:23:43,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:43,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:43,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:43,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:43,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:42" (1/3) ... [2019-10-22 11:23:43,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11816f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:43, skipping insertion in model container [2019-10-22 11:23:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:42" (2/3) ... [2019-10-22 11:23:43,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f11816f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:43, skipping insertion in model container [2019-10-22 11:23:43,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:43" (3/3) ... [2019-10-22 11:23:43,248 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0834.c [2019-10-22 11:23:43,255 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:43,262 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:43,271 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:43,293 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:43,293 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:43,293 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:43,293 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:43,293 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:43,293 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:43,294 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:43,294 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-10-22 11:23:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:23:43,316 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:43,317 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:43,319 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:43,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1546239330, now seen corresponding path program 1 times [2019-10-22 11:23:43,333 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:43,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744119962] [2019-10-22 11:23:43,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:43,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:43,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:43,473 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 11:23:43,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744119962] [2019-10-22 11:23:43,478 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:43,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:43,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10111105] [2019-10-22 11:23:43,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:43,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:43,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:43,505 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2019-10-22 11:23:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:43,532 INFO L93 Difference]: Finished difference Result 84 states and 136 transitions. [2019-10-22 11:23:43,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:43,534 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 11:23:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:43,547 INFO L225 Difference]: With dead ends: 84 [2019-10-22 11:23:43,548 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 11:23:43,552 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 11:23:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 11:23:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-22 11:23:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 11:23:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-10-22 11:23:43,595 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 13 [2019-10-22 11:23:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:43,595 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-22 11:23:43,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2019-10-22 11:23:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:23:43,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:43,596 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:43,597 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:43,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1188959094, now seen corresponding path program 1 times [2019-10-22 11:23:43,598 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:43,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376268359] [2019-10-22 11:23:43,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:43,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:43,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:43,863 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:23:43,864 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:23:43,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:43 BoogieIcfgContainer [2019-10-22 11:23:43,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:43,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:43,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:43,931 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:43,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:43" (3/4) ... [2019-10-22 11:23:43,936 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:23:43,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:43,939 INFO L168 Benchmark]: Toolchain (without parser) took 1801.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 946.4 MB in the beginning and 1.0 GB in the end (delta: -102.5 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:43,939 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:43,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:43,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:43,941 INFO L168 Benchmark]: Boogie Preprocessor took 38.95 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 11:23:43,941 INFO L168 Benchmark]: RCFGBuilder took 641.91 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:43,942 INFO L168 Benchmark]: TraceAbstraction took 691.84 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:43,942 INFO L168 Benchmark]: Witness Printer took 5.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:43,945 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 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 641.91 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 691.84 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: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.70 ms. Allocated memory is still 1.2 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: 158]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 141, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 71, overapproximation of bitwiseAnd at line 140, overapproximation of someBinaryDOUBLEComparisonOperation at line 70. Possible FailurePath: [L17-L42] static const double one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+300, twom1000_exp = 9.33263618503218878990e-302, o_threshold_exp = 7.09782712893383973096e+02, u_threshold_exp = -7.45133219101941108420e+02, ln2HI_exp[2] = { 6.93147180369123816490e-01, -6.93147180369123816490e-01, }, ln2LO_exp[2] = { 1.90821492927058770002e-10, -1.90821492927058770002e-10, }, invln2_exp = 1.44269504088896338700e+00, P1_exp = 1.66666666666666019037e-01, P2_exp = -2.77777777770155933842e-03, P3_exp = 6.61375632143793436117e-05, P4_exp = -1.65339022054652515390e-06, P5_exp = 4.13813679705723846039e-08; VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] double x = 1.0 / 0.0; [L45] double y, hi, lo, c, t; [L46] __int32_t k = 0, xsb; [L47] __uint32_t hx; VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L50] ieee_double_shape_type gh_u; [L51] gh_u.value = (x) [L52] EXPR gh_u.parts.msw [L52] (hx) = gh_u.parts.msw [L54] xsb = (hx >> 31) & 1 [L55] hx &= 0x7fffffff VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L57] COND TRUE hx >= 0x40862E42 VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L58] COND FALSE !(hx >= 0x7ff00000) VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L70] COND TRUE x > o_threshold_exp [L71] return huge_exp * huge_exp; VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L154] double res = __ieee754_exp(x); [L133] __int32_t hx, lx; VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L135] ieee_double_shape_type ew_u; [L136] ew_u.value = (x) [L137] EXPR ew_u.parts.msw [L137] (hx) = ew_u.parts.msw [L138] EXPR ew_u.parts.lsw [L138] (lx) = ew_u.parts.lsw [L140] hx &= 0x7fffffff [L141] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L142] hx = 0x7ff00000 - hx [L143] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L157] COND TRUE !isinf_double(x) [L158] __VERIFIER_error() VAL [halF_exp={-3:0}, huge_exp=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, invln2_exp=1442695040888963387/1000000000000000000, ln2HI_exp={-2:0}, ln2LO_exp={1:0}, o_threshold_exp=88722839111672996637/125000000000000000, one_exp=1, P1_exp=166666666666666019037/1000000000000000000000, P3_exp=661375632143793436117/10000000000000000000000000, P5_exp=413813679705723846039/10000000000000000000000000000, twom1000_exp=93326361850321887899/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:46,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:46,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:46,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:46,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:46,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:46,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:46,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:46,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:46,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:46,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:46,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:46,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:46,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:46,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:46,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:46,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:46,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:46,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:46,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:46,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:46,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:46,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:46,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:46,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:46,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:46,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:46,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:46,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:46,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:46,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:46,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:46,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:46,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:46,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:46,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:46,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:46,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:46,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:46,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:46,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:46,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:46,315 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:46,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:46,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:46,316 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:46,316 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:46,316 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:46,316 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:46,317 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:46,317 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:46,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:46,318 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:46,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:46,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:46,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:46,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:46,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:46,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:46,319 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:46,319 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:46,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:46,319 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:46,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:46,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:46,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:46,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:46,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:46,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:46,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:46,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:46,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:46,321 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:46,321 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:46,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:46,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:46,322 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_a9510168-8d6c-4928-805e-ba405c9fd13f/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 -> 34004772e6a1e54917776a817538fd6c8fd28f94 [2019-10-22 11:23:46,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:46,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:46,369 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:46,371 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:46,371 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:46,372 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0834.c [2019-10-22 11:23:46,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/35b7f1738/e7308f675bea4732b01f6d93c463da4d/FLAGaabd41603 [2019-10-22 11:23:46,851 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:46,851 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/sv-benchmarks/c/float-newlib/double_req_bl_0834.c [2019-10-22 11:23:46,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/35b7f1738/e7308f675bea4732b01f6d93c463da4d/FLAGaabd41603 [2019-10-22 11:23:47,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/bin/utaipan/data/35b7f1738/e7308f675bea4732b01f6d93c463da4d [2019-10-22 11:23:47,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:47,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:47,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:47,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:47,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:47,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d7a225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47, skipping insertion in model container [2019-10-22 11:23:47,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,234 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:47,255 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:47,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:47,477 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:47,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:47,630 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:47,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47 WrapperNode [2019-10-22 11:23:47,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:47,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:47,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:47,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:47,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:47,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:47,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:47,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:47,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:47,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:47,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:47,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:47,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 11:23:47,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 11:23:47,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 11:23:47,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:47,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-10-22 11:23:47,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:23:47,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:47,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:47,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:23:47,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:59,957 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:59,957 INFO L284 CfgBuilder]: Removed 22 assume(true) statements. [2019-10-22 11:23:59,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:59 BoogieIcfgContainer [2019-10-22 11:23:59,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:59,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:59,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:59,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:59,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:47" (1/3) ... [2019-10-22 11:23:59,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9d9adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:59, skipping insertion in model container [2019-10-22 11:23:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (2/3) ... [2019-10-22 11:23:59,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9d9adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:59, skipping insertion in model container [2019-10-22 11:23:59,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:59" (3/3) ... [2019-10-22 11:23:59,965 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0834.c [2019-10-22 11:23:59,972 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:59,979 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:59,988 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:24:00,013 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:00,013 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:00,013 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:00,013 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:00,014 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:00,014 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:00,014 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:00,014 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-10-22 11:24:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:24:00,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:00,032 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:00,034 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:00,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:00,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1546239330, now seen corresponding path program 1 times [2019-10-22 11:24:00,047 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:00,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409692834] [2019-10-22 11:24:00,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 11:24:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:00,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:24:00,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:00,442 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 11:24:00,443 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:00,447 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 11:24:00,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409692834] [2019-10-22 11:24:00,450 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:00,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:24:00,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867067768] [2019-10-22 11:24:00,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:24:00,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:00,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:24:00,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:00,473 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2019-10-22 11:24:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:00,493 INFO L93 Difference]: Finished difference Result 84 states and 136 transitions. [2019-10-22 11:24:00,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:24:00,494 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 11:24:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:00,505 INFO L225 Difference]: With dead ends: 84 [2019-10-22 11:24:00,506 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 11:24:00,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:24:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 11:24:00,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-22 11:24:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 11:24:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-10-22 11:24:00,551 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 13 [2019-10-22 11:24:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:00,552 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-22 11:24:00,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:24:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2019-10-22 11:24:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:24:00,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:00,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:00,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:24:00,754 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:00,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1188959094, now seen corresponding path program 1 times [2019-10-22 11:24:00,755 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:00,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186254563] [2019-10-22 11:24:00,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 11:24:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:01,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:24:01,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:01,203 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 11:24:01,203 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:01,271 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 11:24:01,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186254563] [2019-10-22 11:24:01,271 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:01,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2019-10-22 11:24:01,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755562753] [2019-10-22 11:24:01,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:24:01,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:01,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:24:01,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:01,277 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2019-10-22 11:24:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:01,391 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2019-10-22 11:24:01,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:24:01,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-22 11:24:01,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:01,395 INFO L225 Difference]: With dead ends: 48 [2019-10-22 11:24:01,395 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:24:01,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:24:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:24:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:24:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-22 11:24:01,402 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2019-10-22 11:24:01,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:01,403 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-22 11:24:01,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:24:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-22 11:24:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:01,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:01,404 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:01,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 11:24:01,605 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:01,605 INFO L82 PathProgramCache]: Analyzing trace with hash 968811170, now seen corresponding path program 1 times [2019-10-22 11:24:01,606 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:01,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828846814] [2019-10-22 11:24:01,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 11:24:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:01,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 11:24:01,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:01,960 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 11:24:01,960 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:02,097 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 11:24:02,097 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828846814] [2019-10-22 11:24:02,098 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:02,098 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 11:24:02,098 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753401796] [2019-10-22 11:24:02,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:02,099 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:02,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:02,099 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2019-10-22 11:24:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:02,236 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-10-22 11:24:02,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:02,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 11:24:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:02,240 INFO L225 Difference]: With dead ends: 28 [2019-10-22 11:24:02,240 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:24:02,240 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:24:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:24:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:24:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:24:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-10-22 11:24:02,245 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2019-10-22 11:24:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:02,245 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-10-22 11:24:02,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-10-22 11:24:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:24:02,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:02,248 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:02,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 11:24:02,449 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:02,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2079354756, now seen corresponding path program 1 times [2019-10-22 11:24:02,450 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:02,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372177820] [2019-10-22 11:24:02,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a9510168-8d6c-4928-805e-ba405c9fd13f/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 11:24:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:02,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-22 11:24:02,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:02,736 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 11:24:02,748 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2019-10-22 11:24:02,761 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-10-22 11:24:02,762 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 11:24:02,776 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:02,777 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-22 11:24:02,800 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 11:24:02,801 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-22 11:24:02,801 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:67, output treesize:42 [2019-10-22 11:24:03,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-10-22 11:24:03,082 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 11:24:03,086 INFO L168 Benchmark]: Toolchain (without parser) took 15868.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 945.6 MB in the beginning and 921.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 141.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:03,086 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:03,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:03,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.55 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. [2019-10-22 11:24:03,088 INFO L168 Benchmark]: Boogie Preprocessor took 43.05 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:03,088 INFO L168 Benchmark]: RCFGBuilder took 12229.66 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:03,089 INFO L168 Benchmark]: TraceAbstraction took 3125.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 921.4 MB in the end (delta: 141.9 MB). Peak memory consumption was 141.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:03,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 411.80 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 116.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.55 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 43.05 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 12229.66 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3125.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 921.4 MB in the end (delta: 141.9 MB). Peak memory consumption was 141.9 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...