./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 dbff84b908ff01b4d2841315a486ca175d7dad80 ........................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 dbff84b908ff01b4d2841315a486ca175d7dad80 ................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:19:06,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:19:06,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:19:06,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:19:06,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:19:06,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:19:06,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:19:06,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:19:06,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:19:06,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:19:06,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:19:06,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:19:06,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:19:06,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:19:06,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:19:06,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:19:06,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:19:06,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:19:06,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:19:06,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:19:06,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:19:06,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:19:06,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:19:06,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:19:06,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:19:06,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:19:06,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:19:06,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:19:06,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:19:06,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:19:06,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:19:06,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:19:06,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:19:06,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:19:06,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:19:06,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:19:06,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:19:06,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:19:06,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:19:06,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:19:06,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:19:06,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:19:06,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:19:06,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:19:06,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:19:06,527 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:19:06,527 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:19:06,527 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:19:06,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:19:06,528 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:19:06,528 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:19:06,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:19:06,529 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:19:06,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:19:06,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:19:06,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:19:06,530 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:19:06,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:19:06,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:19:06,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:19:06,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:19:06,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:19:06,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:19:06,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:19:06,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:19:06,532 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:19:06,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:19:06,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:19:06,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:19:06,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:19:06,533 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/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 -> dbff84b908ff01b4d2841315a486ca175d7dad80 [2019-12-07 19:19:06,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:19:06,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:19:06,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:19:06,646 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:19:06,647 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:19:06,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-12-07 19:19:06,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/677af366e/0e8d590525d94815b00630e3aa339309/FLAG076ff20f9 [2019-12-07 19:19:07,193 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:19:07,194 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-12-07 19:19:07,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/677af366e/0e8d590525d94815b00630e3aa339309/FLAG076ff20f9 [2019-12-07 19:19:07,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/677af366e/0e8d590525d94815b00630e3aa339309 [2019-12-07 19:19:07,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:19:07,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:19:07,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:19:07,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:19:07,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:19:07,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e0e62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07, skipping insertion in model container [2019-12-07 19:19:07,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:19:07,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:19:07,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:19:07,891 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:19:07,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:19:07,930 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:19:07,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07 WrapperNode [2019-12-07 19:19:07,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:19:07,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:19:07,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:19:07,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:19:07,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:19:07,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:19:07,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:19:07,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:19:07,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... [2019-12-07 19:19:07,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:19:07,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:19:07,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:19:07,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:19:07,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 [2019-12-07 19:19:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:19:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 19:19:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 19:19:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 19:19:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:19:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:19:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 19:19:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:19:08,255 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:19:08,256 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 19:19:08,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:19:08 BoogieIcfgContainer [2019-12-07 19:19:08,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:19:08,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:19:08,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:19:08,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:19:08,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:19:07" (1/3) ... [2019-12-07 19:19:08,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bbc1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:19:08, skipping insertion in model container [2019-12-07 19:19:08,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:07" (2/3) ... [2019-12-07 19:19:08,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bbc1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:19:08, skipping insertion in model container [2019-12-07 19:19:08,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:19:08" (3/3) ... [2019-12-07 19:19:08,261 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2019-12-07 19:19:08,268 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:19:08,272 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:19:08,279 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:19:08,293 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:19:08,293 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:19:08,293 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:19:08,293 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:19:08,293 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:19:08,293 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:19:08,293 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:19:08,294 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:19:08,302 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 19:19:08,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:19:08,306 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:19:08,307 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:19:08,307 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:19:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:19:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1270339564, now seen corresponding path program 1 times [2019-12-07 19:19:08,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:19:08,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576533187] [2019-12-07 19:19:08,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:19:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:19:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:19:08,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576533187] [2019-12-07 19:19:08,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:19:08,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:19:08,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027725966] [2019-12-07 19:19:08,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:19:08,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:19:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:19:08,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:19:08,403 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-12-07 19:19:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:19:08,415 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2019-12-07 19:19:08,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:19:08,416 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 19:19:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:19:08,423 INFO L225 Difference]: With dead ends: 47 [2019-12-07 19:19:08,423 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 19:19:08,425 INFO L630 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 [2019-12-07 19:19:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 19:19:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 19:19:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 19:19:08,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 19:19:08,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2019-12-07 19:19:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:19:08,447 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 19:19:08,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:19:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 19:19:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:19:08,448 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:19:08,448 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:19:08,448 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:19:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:19:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1216840604, now seen corresponding path program 1 times [2019-12-07 19:19:08,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:19:08,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95587274] [2019-12-07 19:19:08,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:19:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:19:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:19:08,559 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 19:19:08,560 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:19:08,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:19:08 BoogieIcfgContainer [2019-12-07 19:19:08,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:19:08,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:19:08,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:19:08,579 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:19:08,579 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:19:08" (3/4) ... [2019-12-07 19:19:08,582 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 19:19:08,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:19:08,583 INFO L168 Benchmark]: Toolchain (without parser) took 895.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -130.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:08,584 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:19:08,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:08,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:08,585 INFO L168 Benchmark]: Boogie Preprocessor took 28.27 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:08,586 INFO L168 Benchmark]: RCFGBuilder took 261.88 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:08,586 INFO L168 Benchmark]: TraceAbstraction took 321.27 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:08,586 INFO L168 Benchmark]: Witness Printer took 3.25 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. [2019-12-07 19:19:08,589 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 242.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.27 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: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 261.88 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 321.27 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 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=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 19:19:09,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:19:09,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:19:09,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:19:09,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:19:09,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:19:09,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:19:09,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:19:09,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:19:09,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:19:09,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:19:09,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:19:09,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:19:09,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:19:09,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:19:09,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:19:09,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:19:09,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:19:09,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:19:09,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:19:09,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:19:09,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:19:09,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:19:09,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:19:09,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:19:09,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:19:09,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:19:09,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:19:09,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:19:09,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:19:09,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:19:09,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:19:09,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:19:09,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:19:09,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:19:09,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:19:09,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:19:09,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:19:09,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:19:09,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:19:09,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:19:09,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 19:19:09,963 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:19:09,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:19:09,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:19:09,964 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:19:09,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:19:09,964 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:19:09,964 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:19:09,964 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:19:09,965 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:19:09,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:19:09,965 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:19:09,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:19:09,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:19:09,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:19:09,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:19:09,967 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:19:09,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:19:09,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:19:09,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 19:19:09,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:19:09,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:19:09,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:19:09,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:19:09,968 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 -> dbff84b908ff01b4d2841315a486ca175d7dad80 [2019-12-07 19:19:10,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:19:10,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:19:10,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:19:10,150 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:19:10,150 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:19:10,151 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-12-07 19:19:10,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/5a27ae693/d2298a1619104c1bb4e9696f8a4b23bf/FLAG7599e8419 [2019-12-07 19:19:10,564 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:19:10,564 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2019-12-07 19:19:10,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/5a27ae693/d2298a1619104c1bb4e9696f8a4b23bf/FLAG7599e8419 [2019-12-07 19:19:10,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/data/5a27ae693/d2298a1619104c1bb4e9696f8a4b23bf [2019-12-07 19:19:10,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:19:10,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:19:10,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:19:10,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:19:10,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:19:10,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:19:10" (1/1) ... [2019-12-07 19:19:10,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562a36d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:10, skipping insertion in model container [2019-12-07 19:19:10,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:19:10" (1/1) ... [2019-12-07 19:19:10,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:19:10,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:19:11,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:19:11,108 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:19:11,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:19:11,176 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:19:11,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11 WrapperNode [2019-12-07 19:19:11,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:19:11,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:19:11,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:19:11,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:19:11,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:19:11,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:19:11,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:19:11,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:19:11,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... [2019-12-07 19:19:11,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:19:11,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:19:11,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:19:11,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:19:11,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 [2019-12-07 19:19:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 19:19:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 19:19:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 19:19:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 19:19:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:19:11,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:19:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 19:19:11,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 19:19:11,592 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:19:11,592 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 19:19:11,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:19:11 BoogieIcfgContainer [2019-12-07 19:19:11,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:19:11,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:19:11,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:19:11,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:19:11,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:19:10" (1/3) ... [2019-12-07 19:19:11,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72058f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:19:11, skipping insertion in model container [2019-12-07 19:19:11,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:19:11" (2/3) ... [2019-12-07 19:19:11,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72058f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:19:11, skipping insertion in model container [2019-12-07 19:19:11,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:19:11" (3/3) ... [2019-12-07 19:19:11,598 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2019-12-07 19:19:11,604 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:19:11,609 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:19:11,616 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:19:11,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:19:11,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:19:11,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:19:11,631 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:19:11,631 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:19:11,631 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:19:11,631 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:19:11,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:19:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-07 19:19:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:19:11,644 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:19:11,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:19:11,645 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:19:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:19:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2019-12-07 19:19:11,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:19:11,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684285277] [2019-12-07 19:19:11,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 [2019-12-07 19:19:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:19:11,755 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 19:19:11,759 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:19:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:19:11,768 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:19:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:19:11,773 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684285277] [2019-12-07 19:19:11,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:19:11,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 19:19:11,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211604969] [2019-12-07 19:19:11,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 19:19:11,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:19:11,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 19:19:11,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 19:19:11,792 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-12-07 19:19:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:19:11,804 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2019-12-07 19:19:11,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 19:19:11,805 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 19:19:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:19:11,815 INFO L225 Difference]: With dead ends: 52 [2019-12-07 19:19:11,815 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 19:19:11,817 INFO L630 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 [2019-12-07 19:19:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 19:19:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 19:19:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 19:19:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 19:19:11,845 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-12-07 19:19:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:19:11,845 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 19:19:11,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 19:19:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-07 19:19:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 19:19:11,846 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:19:11,846 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:19:12,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 19:19:12,048 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:19:12,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:19:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2019-12-07 19:19:12,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:19:12,053 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431887767] [2019-12-07 19:19:12,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/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 [2019-12-07 19:19:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:19:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:19:12,394 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 19:19:12,394 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:19:12,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 19:19:12,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:19:12 BoogieIcfgContainer [2019-12-07 19:19:12,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:19:12,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:19:12,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:19:12,623 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:19:12,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:19:11" (3/4) ... [2019-12-07 19:19:12,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:19:12,661 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0afff370-43f0-4a9e-99c7-adeba7534448/bin/utaipan/witness.graphml [2019-12-07 19:19:12,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:19:12,662 INFO L168 Benchmark]: Toolchain (without parser) took 1686.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -83.2 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:12,663 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:19:12,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:12,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:12,664 INFO L168 Benchmark]: Boogie Preprocessor took 27.77 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. [2019-12-07 19:19:12,664 INFO L168 Benchmark]: RCFGBuilder took 356.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:12,664 INFO L168 Benchmark]: TraceAbstraction took 1028.94 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: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:19:12,664 INFO L168 Benchmark]: Witness Printer took 38.24 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. [2019-12-07 19:19:12,666 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 200.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -171.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.77 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 356.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1028.94 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: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 11.5 GB. * Witness Printer took 38.24 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: - CounterExampleResult [Line: 89]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] double x = -1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! Received shutdown request...