./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a .................................................................................................................................................................................................................................................................................................. 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_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:57:05,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:57:05,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:57:05,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:57:05,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:57:05,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:57:05,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:57:05,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:57:05,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:57:05,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:57:05,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:57:05,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:57:05,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:57:05,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:57:05,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:57:05,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:57:05,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:57:05,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:57:05,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:57:05,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:57:05,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:57:05,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:57:05,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:57:05,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:57:05,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:57:05,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:57:05,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:57:05,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:57:05,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:57:05,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:57:05,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:57:05,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:57:05,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:57:05,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:57:05,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:57:05,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:57:05,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:57:05,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:57:05,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:57:05,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:57:05,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:57:05,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:57:05,933 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:57:05,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:57:05,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:57:05,934 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:57:05,934 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:57:05,934 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:57:05,934 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:57:05,934 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:57:05,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:57:05,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:57:05,935 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:57:05,935 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:57:05,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:57:05,935 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:57:05,935 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:57:05,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:57:05,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:57:05,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:57:05,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:05,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:57:05,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:57:05,938 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_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-12-07 20:57:06,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:57:06,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:57:06,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:57:06,049 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:57:06,050 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:57:06,050 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-12-07 20:57:06,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/b983acdba/c306f1f8f76640489e31bec74175934a/FLAGf52baec67 [2019-12-07 20:57:06,494 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:57:06,495 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-12-07 20:57:06,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/b983acdba/c306f1f8f76640489e31bec74175934a/FLAGf52baec67 [2019-12-07 20:57:06,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/b983acdba/c306f1f8f76640489e31bec74175934a [2019-12-07 20:57:06,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:57:06,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:57:06,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:06,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:57:06,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:57:06,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcd8b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06, skipping insertion in model container [2019-12-07 20:57:06,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:57:06,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:57:06,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:06,680 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:57:06,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:06,713 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:57:06,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06 WrapperNode [2019-12-07 20:57:06,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:06,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:06,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:57:06,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:57:06,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:06,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:57:06,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:57:06,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:57:06,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... [2019-12-07 20:57:06,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:57:06,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:57:06,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:57:06,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:57:06,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 20:57:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 20:57:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:57:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 20:57:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:57:06,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:57:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 20:57:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:57:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:57:07,132 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:57:07,132 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 20:57:07,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:07 BoogieIcfgContainer [2019-12-07 20:57:07,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:57:07,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:57:07,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:57:07,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:57:07,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:57:06" (1/3) ... [2019-12-07 20:57:07,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5d8484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:07, skipping insertion in model container [2019-12-07 20:57:07,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:06" (2/3) ... [2019-12-07 20:57:07,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5d8484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:07, skipping insertion in model container [2019-12-07 20:57:07,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:07" (3/3) ... [2019-12-07 20:57:07,140 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-12-07 20:57:07,148 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:57:07,152 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:57:07,159 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:57:07,174 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:57:07,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:57:07,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:57:07,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:57:07,174 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:57:07,174 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:57:07,174 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:57:07,174 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:57:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-07 20:57:07,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:57:07,187 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:07,187 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:07,187 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:07,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:07,191 INFO L82 PathProgramCache]: Analyzing trace with hash -427355386, now seen corresponding path program 1 times [2019-12-07 20:57:07,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:07,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276287528] [2019-12-07 20:57:07,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:07,268 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 20:57:07,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276287528] [2019-12-07 20:57:07,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:07,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:57:07,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449217702] [2019-12-07 20:57:07,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:57:07,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:57:07,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:57:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:57:07,283 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-12-07 20:57:07,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:07,294 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2019-12-07 20:57:07,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:57:07,295 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-12-07 20:57:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:07,302 INFO L225 Difference]: With dead ends: 43 [2019-12-07 20:57:07,302 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 20:57:07,304 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 20:57:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 20:57:07,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 20:57:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 20:57:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-12-07 20:57:07,326 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 9 [2019-12-07 20:57:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:07,326 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-12-07 20:57:07,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:57:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-12-07 20:57:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:57:07,327 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:07,327 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:07,327 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:07,327 INFO L82 PathProgramCache]: Analyzing trace with hash -335962293, now seen corresponding path program 1 times [2019-12-07 20:57:07,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:57:07,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522395076] [2019-12-07 20:57:07,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:57:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:57:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:57:07,379 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:57:07,379 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:57:07,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:57:07 BoogieIcfgContainer [2019-12-07 20:57:07,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:57:07,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:57:07,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:57:07,398 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:57:07,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:07" (3/4) ... [2019-12-07 20:57:07,400 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 20:57:07,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:57:07,402 INFO L168 Benchmark]: Toolchain (without parser) took 890.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -116.4 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,402 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:57:07,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.24 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 20:57:07,403 INFO L168 Benchmark]: Boogie Preprocessor took 20.50 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 20:57:07,404 INFO L168 Benchmark]: RCFGBuilder took 370.88 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,404 INFO L168 Benchmark]: TraceAbstraction took 262.90 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:07,404 INFO L168 Benchmark]: Witness Printer took 2.81 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 20:57:07,406 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 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -200.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.24 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 20.50 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 370.88 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 262.90 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.81 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: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND FALSE !(j0 < 20) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L47] COND TRUE j0 > 51 [L48] COND FALSE !(j0 == 0x400) [L51] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 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=22occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 20:57:08,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:57:08,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:57:08,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:57:08,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:57:08,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:57:08,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:57:08,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:57:08,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:57:08,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:57:08,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:57:08,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:57:08,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:57:08,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:57:08,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:57:08,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:57:08,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:57:08,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:57:08,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:57:08,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:57:08,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:57:08,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:57:08,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:57:08,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:57:08,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:57:08,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:57:08,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:57:08,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:57:08,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:57:08,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:57:08,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:57:08,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:57:08,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:57:08,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:57:08,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:57:08,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:57:08,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:57:08,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:57:08,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:57:08,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:57:08,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:57:08,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 20:57:08,829 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:57:08,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:57:08,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:57:08,830 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:57:08,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:57:08,830 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:57:08,830 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:57:08,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:57:08,830 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:57:08,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:57:08,831 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:57:08,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:57:08,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:57:08,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:57:08,832 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:57:08,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:57:08,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:57:08,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 20:57:08,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:57:08,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:57:08,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:57:08,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:57:08,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:57:08,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:57:08,834 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 20:57:08,834 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 20:57:08,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:57:08,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:57:08,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:57:08,834 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_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-12-07 20:57:09,001 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:57:09,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:57:09,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:57:09,012 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:57:09,012 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:57:09,012 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-12-07 20:57:09,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/8fffa15b6/a9e6ed787d994a6b9ee9ca73d5e6ad7b/FLAG0097337b8 [2019-12-07 20:57:09,500 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:57:09,501 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-12-07 20:57:09,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/8fffa15b6/a9e6ed787d994a6b9ee9ca73d5e6ad7b/FLAG0097337b8 [2019-12-07 20:57:09,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/data/8fffa15b6/a9e6ed787d994a6b9ee9ca73d5e6ad7b [2019-12-07 20:57:09,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:57:09,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:57:09,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:09,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:57:09,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:57:09,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357db60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09, skipping insertion in model container [2019-12-07 20:57:09,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:57:09,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:57:09,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:09,654 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:57:09,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:57:09,724 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:57:09,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09 WrapperNode [2019-12-07 20:57:09,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:57:09,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:09,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:57:09,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:57:09,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:57:09,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:57:09,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:57:09,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:57:09,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... [2019-12-07 20:57:09,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:57:09,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:57:09,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:57:09,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:57:09,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:57:09,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 20:57:09,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:57:10,706 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:57:10,706 INFO L287 CfgBuilder]: Removed 14 assume(true) statements. [2019-12-07 20:57:10,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:10 BoogieIcfgContainer [2019-12-07 20:57:10,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:57:10,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:57:10,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:57:10,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:57:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:57:09" (1/3) ... [2019-12-07 20:57:10,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bc0db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:10, skipping insertion in model container [2019-12-07 20:57:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:57:09" (2/3) ... [2019-12-07 20:57:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bc0db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:57:10, skipping insertion in model container [2019-12-07 20:57:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:10" (3/3) ... [2019-12-07 20:57:10,712 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-12-07 20:57:10,718 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:57:10,722 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:57:10,729 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:57:10,744 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:57:10,744 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:57:10,744 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:57:10,744 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:57:10,744 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:57:10,744 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:57:10,744 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:57:10,744 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:57:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-12-07 20:57:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:57:10,757 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:10,758 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:10,758 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:10,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-12-07 20:57:10,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:57:10,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258205029] [2019-12-07 20:57:10,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 20:57:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:10,823 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 20:57:10,826 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:10,836 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 20:57:10,836 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:10,839 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 20:57:10,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258205029] [2019-12-07 20:57:10,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:10,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 20:57:10,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618636642] [2019-12-07 20:57:10,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 20:57:10,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:57:10,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 20:57:10,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:57:10,855 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-12-07 20:57:10,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:10,870 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-12-07 20:57:10,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 20:57:10,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-12-07 20:57:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:10,880 INFO L225 Difference]: With dead ends: 74 [2019-12-07 20:57:10,880 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 20:57:10,883 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 20:57:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 20:57:10,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-12-07 20:57:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 20:57:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-12-07 20:57:10,909 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-12-07 20:57:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:10,909 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-12-07 20:57:10,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 20:57:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-12-07 20:57:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 20:57:10,910 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:10,910 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:11,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 20:57:11,112 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-12-07 20:57:11,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:57:11,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706671482] [2019-12-07 20:57:11,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/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 20:57:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:11,215 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 20:57:11,216 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:11,271 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 20:57:11,272 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:11,327 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 20:57:11,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706671482] [2019-12-07 20:57:11,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:11,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 20:57:11,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253195185] [2019-12-07 20:57:11,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:57:11,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:57:11,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:57:11,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:57:11,329 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2019-12-07 20:57:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:11,606 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-12-07 20:57:11,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:57:11,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-12-07 20:57:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:11,608 INFO L225 Difference]: With dead ends: 59 [2019-12-07 20:57:11,608 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 20:57:11,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-12-07 20:57:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 20:57:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2019-12-07 20:57:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 20:57:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-12-07 20:57:11,612 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2019-12-07 20:57:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:11,613 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-12-07 20:57:11,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:57:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-12-07 20:57:11,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 20:57:11,613 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:11,613 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:11,814 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 20:57:11,815 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2019-12-07 20:57:11,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:57:11,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482508923] [2019-12-07 20:57:11,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 20:57:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:57:11,986 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 20:57:11,987 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:57:12,034 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 20:57:12,034 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:57:12,783 WARN L192 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-12-07 20:57:12,993 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 20:57:12,993 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482508923] [2019-12-07 20:57:12,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:57:12,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 20:57:12,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295101795] [2019-12-07 20:57:12,994 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:57:12,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:57:12,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:57:12,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:57:12,995 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-12-07 20:57:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:57:13,371 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-12-07 20:57:13,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:57:13,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-12-07 20:57:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:57:13,378 INFO L225 Difference]: With dead ends: 34 [2019-12-07 20:57:13,378 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 20:57:13,379 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:57:13,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 20:57:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 20:57:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 20:57:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-12-07 20:57:13,382 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2019-12-07 20:57:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:57:13,383 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-12-07 20:57:13,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:57:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-12-07 20:57:13,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 20:57:13,383 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:57:13,383 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:57:13,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 20:57:13,585 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:57:13,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:57:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2019-12-07 20:57:13,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:57:13,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108700435] [2019-12-07 20:57:13,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 20:57:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:57:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:57:13,906 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 20:57:13,906 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:57:14,107 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 20:57:14,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:57:14 BoogieIcfgContainer [2019-12-07 20:57:14,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:57:14,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:57:14,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:57:14,154 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:57:14,155 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:57:10" (3/4) ... [2019-12-07 20:57:14,157 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:57:14,195 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4a6a2924-204c-42c1-ad3a-861ca3063f15/bin/utaipan/witness.graphml [2019-12-07 20:57:14,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:57:14,196 INFO L168 Benchmark]: Toolchain (without parser) took 4680.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.0 MB in the beginning and 978.5 MB in the end (delta: -27.5 MB). Peak memory consumption was 110.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:14,196 INFO L168 Benchmark]: CDTParser took 0.13 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 20:57:14,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:14,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.63 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 20:57:14,197 INFO L168 Benchmark]: Boogie Preprocessor took 23.97 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 20:57:14,198 INFO L168 Benchmark]: RCFGBuilder took 929.20 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:14,198 INFO L168 Benchmark]: TraceAbstraction took 3446.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.3 MB in the end (delta: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:14,198 INFO L168 Benchmark]: Witness Printer took 41.08 ms. Allocated memory is still 1.2 GB. Free memory was 985.3 MB in the beginning and 978.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:57:14,200 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.97 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 929.20 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3446.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.3 MB in the end (delta: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 11.5 GB. * Witness Printer took 41.08 ms. Allocated memory is still 1.2 GB. Free memory was 985.3 MB in the beginning and 978.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 103]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND TRUE j0 < 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE huge_floor + x > 0.0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(i0 >= 0) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L32] i0 = 0xbff00000 [L33] i1 = 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L71] ieee_double_shape_type iw_u; [L72] iw_u.parts.msw = (i0) [L73] iw_u.parts.lsw = (i1) [L74] EXPR iw_u.value [L74] (x) = iw_u.value [L76] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 123 SDslu, 47 SDs, 0 SdLazy, 27 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 3734 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...