./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.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_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 9e3ed9850bae7d066050d32134f925a24fb3772d .................................................................................................................................................................................................................................................................................................................... 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_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 9e3ed9850bae7d066050d32134f925a24fb3772d .............................................................................................................................................................................................................................................................................................................................. 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 13:36:38,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:36:38,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:36:38,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:36:38,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:36:38,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:36:38,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:36:38,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:36:38,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:36:38,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:36:38,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:36:38,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:36:38,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:36:38,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:36:38,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:36:38,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:36:38,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:36:38,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:36:38,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:36:38,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:36:38,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:36:38,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:36:38,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:36:38,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:36:38,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:36:38,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:36:38,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:36:38,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:36:38,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:36:38,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:36:38,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:36:38,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:36:38,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:36:38,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:36:38,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:36:38,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:36:38,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:36:38,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:36:38,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:36:38,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:36:38,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:36:38,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 13:36:38,938 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:36:38,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:36:38,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:36:38,939 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:36:38,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:36:38,939 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:36:38,939 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:36:38,939 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:36:38,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:36:38,940 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:36:38,940 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:36:38,940 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:36:38,940 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:36:38,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:36:38,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:36:38,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:36:38,941 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:36:38,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:36:38,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:36:38,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:36:38,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:36:38,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:36:38,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:36:38,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:36:38,942 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:36:38,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:36:38,943 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:36:38,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:36:38,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:36:38,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:36:38,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:36:38,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:36:38,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:36:38,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:36:38,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:36:38,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:36:38,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:36:38,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:36:38,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:36:38,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:36:38,945 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_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-12-07 13:36:39,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:36:39,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:36:39,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:36:39,065 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:36:39,065 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:36:39,066 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 13:36:39,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/cb3fc495f/84a3b261bf834b7d9376d1dda168249a/FLAGd1033b4ec [2019-12-07 13:36:39,524 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:36:39,524 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 13:36:39,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/cb3fc495f/84a3b261bf834b7d9376d1dda168249a/FLAGd1033b4ec [2019-12-07 13:36:39,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/cb3fc495f/84a3b261bf834b7d9376d1dda168249a [2019-12-07 13:36:39,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:36:39,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:36:39,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:36:39,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:36:39,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:36:39,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@881d7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39, skipping insertion in model container [2019-12-07 13:36:39,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:36:39,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:36:39,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:36:39,761 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:36:39,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:36:39,805 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:36:39,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39 WrapperNode [2019-12-07 13:36:39,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:36:39,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:36:39,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:36:39,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:36:39,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:36:39,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:36:39,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:36:39,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:36:39,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... [2019-12-07 13:36:39,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:36:39,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:36:39,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:36:39,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:36:39,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 13:36:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:36:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:36:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 13:36:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 13:36:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:36:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:36:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:36:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-07 13:36:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:36:40,306 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:36:40,306 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 13:36:40,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:40 BoogieIcfgContainer [2019-12-07 13:36:40,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:36:40,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:36:40,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:36:40,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:36:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:36:39" (1/3) ... [2019-12-07 13:36:40,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df39c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:40, skipping insertion in model container [2019-12-07 13:36:40,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:39" (2/3) ... [2019-12-07 13:36:40,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df39c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:40, skipping insertion in model container [2019-12-07 13:36:40,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:40" (3/3) ... [2019-12-07 13:36:40,312 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-12-07 13:36:40,319 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:36:40,323 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:36:40,331 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 13:36:40,348 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:36:40,348 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:36:40,348 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:36:40,348 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:36:40,348 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:36:40,348 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:36:40,348 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:36:40,348 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:36:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-12-07 13:36:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:36:40,363 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:36:40,363 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:36:40,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:36:40,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:36:40,367 INFO L82 PathProgramCache]: Analyzing trace with hash 25200910, now seen corresponding path program 1 times [2019-12-07 13:36:40,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:36:40,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531412913] [2019-12-07 13:36:40,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:36:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:36:40,453 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 13:36:40,454 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531412913] [2019-12-07 13:36:40,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:36:40,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:36:40,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081506573] [2019-12-07 13:36:40,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:36:40,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:36:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:36:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:36:40,468 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-12-07 13:36:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:36:40,484 INFO L93 Difference]: Finished difference Result 87 states and 147 transitions. [2019-12-07 13:36:40,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:36:40,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 13:36:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:36:40,492 INFO L225 Difference]: With dead ends: 87 [2019-12-07 13:36:40,492 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 13:36:40,494 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 13:36:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 13:36:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-12-07 13:36:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 13:36:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2019-12-07 13:36:40,520 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 11 [2019-12-07 13:36:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:36:40,520 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2019-12-07 13:36:40,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:36:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2019-12-07 13:36:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:36:40,521 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:36:40,521 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:36:40,521 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:36:40,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:36:40,521 INFO L82 PathProgramCache]: Analyzing trace with hash 127004650, now seen corresponding path program 1 times [2019-12-07 13:36:40,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:36:40,522 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632553672] [2019-12-07 13:36:40,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:36:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:36:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:36:40,628 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 13:36:40,629 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:36:40,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:36:40 BoogieIcfgContainer [2019-12-07 13:36:40,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:36:40,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:36:40,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:36:40,651 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:36:40,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:40" (3/4) ... [2019-12-07 13:36:40,654 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:36:40,654 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:36:40,656 INFO L168 Benchmark]: Toolchain (without parser) took 1111.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 940.5 MB in the beginning and 996.3 MB in the end (delta: -55.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:40,656 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:36:40,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:40,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.42 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. [2019-12-07 13:36:40,657 INFO L168 Benchmark]: Boogie Preprocessor took 27.93 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:40,658 INFO L168 Benchmark]: RCFGBuilder took 438.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:40,658 INFO L168 Benchmark]: TraceAbstraction took 342.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.3 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:40,658 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.1 GB. Free memory is still 996.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:36:40,661 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.42 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 27.93 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 438.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 342.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 996.3 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.1 GB. Free memory is still 996.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1, Zero_fmod={3:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] COND TRUE isfinite_double(x) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={3:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 62 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=44occurred 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, 25 NumberOfCodeBlocks, 25 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 13:36:41,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:36:41,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:36:41,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:36:41,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:36:41,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:36:41,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:36:41,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:36:41,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:36:41,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:36:41,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:36:41,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:36:41,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:36:41,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:36:41,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:36:41,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:36:41,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:36:41,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:36:41,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:36:41,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:36:42,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:36:42,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:36:42,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:36:42,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:36:42,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:36:42,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:36:42,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:36:42,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:36:42,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:36:42,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:36:42,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:36:42,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:36:42,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:36:42,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:36:42,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:36:42,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:36:42,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:36:42,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:36:42,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:36:42,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:36:42,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:36:42,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 13:36:42,027 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:36:42,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:36:42,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:36:42,028 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:36:42,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:36:42,029 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:36:42,029 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:36:42,029 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:36:42,029 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:36:42,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:36:42,030 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:36:42,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:36:42,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:36:42,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:36:42,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:36:42,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:36:42,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:36:42,031 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 13:36:42,031 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 13:36:42,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:36:42,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:36:42,032 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:36:42,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:36:42,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:36:42,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:36:42,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:36:42,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:36:42,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:36:42,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:36:42,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:36:42,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:36:42,034 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 13:36:42,034 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 13:36:42,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:36:42,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:36:42,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:36:42,035 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_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-12-07 13:36:42,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:36:42,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:36:42,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:36:42,222 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:36:42,223 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:36:42,223 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 13:36:42,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/ba2b070c7/2ec28a8f61b04418ae96a83cd6645265/FLAGd636578de [2019-12-07 13:36:42,696 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:36:42,696 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-07 13:36:42,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/ba2b070c7/2ec28a8f61b04418ae96a83cd6645265/FLAGd636578de [2019-12-07 13:36:42,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/data/ba2b070c7/2ec28a8f61b04418ae96a83cd6645265 [2019-12-07 13:36:42,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:36:42,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:36:42,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:36:42,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:36:42,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:36:42,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:42,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b70e7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42, skipping insertion in model container [2019-12-07 13:36:42,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:42,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:36:42,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:36:42,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:36:42,875 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:36:42,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:36:42,955 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:36:42,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42 WrapperNode [2019-12-07 13:36:42,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:36:42,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:36:42,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:36:42,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:36:42,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:42,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:42,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:36:42,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:36:42,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:36:42,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:36:42,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:42,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:43,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:43,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:43,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:43,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:43,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... [2019-12-07 13:36:43,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:36:43,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:36:43,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:36:43,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:36:43,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 13:36:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 13:36:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 13:36:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:36:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-07 13:36:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 13:36:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:36:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:36:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 13:36:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:36:46,337 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:36:46,337 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-07 13:36:46,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:46 BoogieIcfgContainer [2019-12-07 13:36:46,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:36:46,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:36:46,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:36:46,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:36:46,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:36:42" (1/3) ... [2019-12-07 13:36:46,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4868da68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:46, skipping insertion in model container [2019-12-07 13:36:46,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:36:42" (2/3) ... [2019-12-07 13:36:46,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4868da68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:36:46, skipping insertion in model container [2019-12-07 13:36:46,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:46" (3/3) ... [2019-12-07 13:36:46,345 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-12-07 13:36:46,353 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:36:46,357 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:36:46,365 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 13:36:46,380 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:36:46,380 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:36:46,380 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:36:46,380 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:36:46,381 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:36:46,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:36:46,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:36:46,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:36:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-07 13:36:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 13:36:46,394 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:36:46,395 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:36:46,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:36:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:36:46,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-07 13:36:46,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 13:36:46,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770428484] [2019-12-07 13:36:46,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 13:36:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:36:47,257 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 13:36:47,261 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:36:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:36:47,272 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:36:47,274 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 13:36:47,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770428484] [2019-12-07 13:36:47,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:36:47,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 13:36:47,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418610034] [2019-12-07 13:36:47,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:36:47,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 13:36:47,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:36:47,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:36:47,293 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-07 13:36:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:36:47,313 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-07 13:36:47,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:36:47,314 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-07 13:36:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:36:47,324 INFO L225 Difference]: With dead ends: 118 [2019-12-07 13:36:47,324 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 13:36:47,327 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 13:36:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 13:36:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 13:36:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 13:36:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-07 13:36:47,356 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-07 13:36:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:36:47,356 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-07 13:36:47,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:36:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-07 13:36:47,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 13:36:47,357 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:36:47,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:36:47,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 13:36:47,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:36:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:36:47,558 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-07 13:36:47,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 13:36:47,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817552900] [2019-12-07 13:36:47,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/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 13:36:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:36:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:36:49,844 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 13:36:49,844 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:36:50,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 13:36:50,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:36:50 BoogieIcfgContainer [2019-12-07 13:36:50,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:36:50,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:36:50,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:36:50,087 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:36:50,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:36:46" (3/4) ... [2019-12-07 13:36:50,089 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 13:36:50,125 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e5f01d87-ba88-494f-b75b-8f7a60ab015d/bin/utaipan/witness.graphml [2019-12-07 13:36:50,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:36:50,126 INFO L168 Benchmark]: Toolchain (without parser) took 7413.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 953.7 MB in the beginning and 996.4 MB in the end (delta: -42.7 MB). Peak memory consumption was 77.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:50,126 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 13:36:50,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:50,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.77 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:50,127 INFO L168 Benchmark]: Boogie Preprocessor took 30.73 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. [2019-12-07 13:36:50,128 INFO L168 Benchmark]: RCFGBuilder took 3316.36 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: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:50,128 INFO L168 Benchmark]: TraceAbstraction took 3747.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.4 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:36:50,128 INFO L168 Benchmark]: Witness Printer took 38.06 ms. Allocated memory is still 1.1 GB. Free memory is still 996.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:36:50,130 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 243.04 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.77 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3316.36 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: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3747.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 996.4 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. * Witness Printer took 38.06 ms. Allocated memory is still 1.1 GB. Free memory is still 996.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 189]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L183] COND TRUE isfinite_double(x) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 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=60occurred 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, 1.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 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...