./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.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_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 9a30c63b7ba6607790fb9b2ddb8b19a74f00f07b ........................................................................................................................................................................................................................................................................................................................................................... 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_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 9a30c63b7ba6607790fb9b2ddb8b19a74f00f07b ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:08:31,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:08:31,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:08:31,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:08:31,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:08:31,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:08:31,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:08:31,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:08:31,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:08:31,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:08:31,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:08:31,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:08:31,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:08:31,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:08:31,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:08:31,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:08:31,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:08:31,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:08:31,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:08:31,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:08:31,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:08:31,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:08:31,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:08:31,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:08:31,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:08:31,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:08:31,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:08:31,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:08:31,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:08:31,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:08:31,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:08:31,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:08:31,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:08:31,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:08:31,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:08:31,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:08:31,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:08:31,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:08:31,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:08:31,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:08:31,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:08:31,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:08:31,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:08:31,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:08:31,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:08:31,733 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:08:31,733 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:08:31,733 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:08:31,734 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:08:31,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:08:31,735 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:08:31,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:08:31,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:08:31,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:08:31,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:08:31,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:08:31,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:08:31,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:08:31,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:08:31,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:08:31,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:08:31,738 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_3985cfd7-292d-4b31-ae77-e76dbc823527/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 -> 9a30c63b7ba6607790fb9b2ddb8b19a74f00f07b [2019-12-07 14:08:31,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:08:31,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:08:31,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:08:31,850 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:08:31,850 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:08:31,850 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2019-12-07 14:08:31,887 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/c83ed0d08/8a32142d38e547e492a5d4c7913c1d72/FLAG76ef722c1 [2019-12-07 14:08:32,336 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:08:32,337 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2019-12-07 14:08:32,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/c83ed0d08/8a32142d38e547e492a5d4c7913c1d72/FLAG76ef722c1 [2019-12-07 14:08:32,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/c83ed0d08/8a32142d38e547e492a5d4c7913c1d72 [2019-12-07 14:08:32,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:08:32,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:08:32,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:08:32,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:08:32,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:08:32,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a99e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32, skipping insertion in model container [2019-12-07 14:08:32,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:08:32,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:08:32,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:08:32,533 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:08:32,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:08:32,574 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:08:32,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32 WrapperNode [2019-12-07 14:08:32,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:08:32,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:08:32,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:08:32,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:08:32,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:08:32,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:08:32,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:08:32,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:08:32,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... [2019-12-07 14:08:32,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:08:32,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:08:32,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:08:32,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:08:32,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 14:08:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:08:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 14:08:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:08:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 14:08:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:08:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:08:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:08:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:08:32,964 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:08:32,965 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:08:32,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:08:32 BoogieIcfgContainer [2019-12-07 14:08:32,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:08:32,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:08:32,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:08:32,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:08:32,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:08:32" (1/3) ... [2019-12-07 14:08:32,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eff27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:08:32, skipping insertion in model container [2019-12-07 14:08:32,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:32" (2/3) ... [2019-12-07 14:08:32,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eff27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:08:32, skipping insertion in model container [2019-12-07 14:08:32,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:08:32" (3/3) ... [2019-12-07 14:08:32,970 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2019-12-07 14:08:32,977 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:08:32,982 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:08:32,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:08:33,004 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:08:33,004 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:08:33,004 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:08:33,004 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:08:33,004 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:08:33,004 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:08:33,004 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:08:33,005 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:08:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-12-07 14:08:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:08:33,017 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:08:33,018 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:08:33,018 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:08:33,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:08:33,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1864158747, now seen corresponding path program 1 times [2019-12-07 14:08:33,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:08:33,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080812545] [2019-12-07 14:08:33,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:08:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:08:33,108 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 14:08:33,109 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080812545] [2019-12-07 14:08:33,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:08:33,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:08:33,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494532683] [2019-12-07 14:08:33,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:08:33,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:08:33,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:08:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:08:33,123 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-12-07 14:08:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:08:33,135 INFO L93 Difference]: Finished difference Result 48 states and 75 transitions. [2019-12-07 14:08:33,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:08:33,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 14:08:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:08:33,142 INFO L225 Difference]: With dead ends: 48 [2019-12-07 14:08:33,142 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 14:08:33,144 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 14:08:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 14:08:33,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 14:08:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:08:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-12-07 14:08:33,166 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 10 [2019-12-07 14:08:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:08:33,166 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-12-07 14:08:33,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:08:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-12-07 14:08:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:08:33,167 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:08:33,167 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:08:33,167 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:08:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:08:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1718213142, now seen corresponding path program 1 times [2019-12-07 14:08:33,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:08:33,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501378106] [2019-12-07 14:08:33,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:08:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:08:33,199 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 14:08:33,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501378106] [2019-12-07 14:08:33,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:08:33,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:08:33,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127255158] [2019-12-07 14:08:33,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:08:33,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:08:33,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:08:33,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:08:33,201 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2019-12-07 14:08:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:08:33,212 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-12-07 14:08:33,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:08:33,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 14:08:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:08:33,213 INFO L225 Difference]: With dead ends: 39 [2019-12-07 14:08:33,213 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 14:08:33,214 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:08:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 14:08:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 14:08:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 14:08:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 14:08:33,217 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2019-12-07 14:08:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:08:33,217 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 14:08:33,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:08:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 14:08:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:08:33,217 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:08:33,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:08:33,218 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:08:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:08:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1692913035, now seen corresponding path program 1 times [2019-12-07 14:08:33,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:08:33,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852663069] [2019-12-07 14:08:33,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:08:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:08:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:08:33,305 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 14:08:33,305 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:08:33,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:08:33 BoogieIcfgContainer [2019-12-07 14:08:33,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:08:33,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:08:33,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:08:33,331 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:08:33,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:08:32" (3/4) ... [2019-12-07 14:08:33,333 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:08:33,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:08:33,335 INFO L168 Benchmark]: Toolchain (without parser) took 982.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -83.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:08:33,335 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:08:33,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:08:33,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.64 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 14:08:33,336 INFO L168 Benchmark]: Boogie Preprocessor took 23.32 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 14:08:33,337 INFO L168 Benchmark]: RCFGBuilder took 336.75 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:08:33,337 INFO L168 Benchmark]: TraceAbstraction took 364.15 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:08:33,337 INFO L168 Benchmark]: Witness Printer took 3.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:08:33,339 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 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 221.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.64 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 23.32 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 336.75 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: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 364.15 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 137, overapproximation of bitwiseAnd at line 133, overapproximation of someBinaryArithmeticDOUBLEoperation at line 72. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; [L146] double x = __VERIFIER_nondet_double(); [L148] EXPR x < 0 && isfinite_double(x) [L127] __int32_t hx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L129] ieee_double_shape_type gh_u; [L130] gh_u.value = (x) [L131] EXPR gh_u.parts.msw [L131] (hx) = gh_u.parts.msw [L133] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L148] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L148] COND TRUE (x < 0 && isfinite_double(x)) [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L58] COND FALSE !(hx < 0x00100000) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L71] COND TRUE hx >= 0x7ff00000 [L72] return x + x; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] double res = __ieee754_log(x); [L137] return x != x; [L153] COND TRUE !isnan_double(res) [L154] __VERIFIER_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 0 SDslu, 21 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 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 14:08:34,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:08:34,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:08:34,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:08:34,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:08:34,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:08:34,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:08:34,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:08:34,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:08:34,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:08:34,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:08:34,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:08:34,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:08:34,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:08:34,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:08:34,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:08:34,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:08:34,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:08:34,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:08:34,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:08:34,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:08:34,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:08:34,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:08:34,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:08:34,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:08:34,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:08:34,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:08:34,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:08:34,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:08:34,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:08:34,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:08:34,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:08:34,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:08:34,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:08:34,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:08:34,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:08:34,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:08:34,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:08:34,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:08:34,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:08:34,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:08:34,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 14:08:34,730 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:08:34,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:08:34,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:08:34,731 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:08:34,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:08:34,731 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:08:34,731 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:08:34,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:08:34,731 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:08:34,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:08:34,732 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:08:34,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:08:34,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:08:34,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:08:34,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:08:34,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:08:34,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:08:34,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:08:34,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:08:34,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:08:34,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:08:34,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:08:34,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:08:34,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:08:34,735 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 14:08:34,735 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 14:08:34,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:08:34,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:08:34,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:08:34,735 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_3985cfd7-292d-4b31-ae77-e76dbc823527/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 -> 9a30c63b7ba6607790fb9b2ddb8b19a74f00f07b [2019-12-07 14:08:34,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:08:34,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:08:34,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:08:34,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:08:34,921 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:08:34,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2019-12-07 14:08:34,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/c484a2d64/b8e41aff8e3b431c827318b6bbeda4df/FLAGf38d69e33 [2019-12-07 14:08:35,360 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:08:35,360 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2019-12-07 14:08:35,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/c484a2d64/b8e41aff8e3b431c827318b6bbeda4df/FLAGf38d69e33 [2019-12-07 14:08:35,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/data/c484a2d64/b8e41aff8e3b431c827318b6bbeda4df [2019-12-07 14:08:35,745 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:08:35,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:08:35,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:08:35,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:08:35,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:08:35,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:35,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440b73fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35, skipping insertion in model container [2019-12-07 14:08:35,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:35,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:08:35,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:08:35,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:08:35,907 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:08:35,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:08:35,984 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:08:35,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35 WrapperNode [2019-12-07 14:08:35,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:08:35,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:08:35,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:08:35,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:08:35,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:35,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:08:36,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:08:36,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:08:36,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:08:36,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... [2019-12-07 14:08:36,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:08:36,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:08:36,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:08:36,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:08:36,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 14:08:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-07 14:08:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-07 14:08:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:08:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 14:08:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:08:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:08:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 14:08:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:08:58,059 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:08:58,059 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:08:58,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:08:58 BoogieIcfgContainer [2019-12-07 14:08:58,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:08:58,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:08:58,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:08:58,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:08:58,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:08:35" (1/3) ... [2019-12-07 14:08:58,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67aa313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:08:58, skipping insertion in model container [2019-12-07 14:08:58,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:08:35" (2/3) ... [2019-12-07 14:08:58,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67aa313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:08:58, skipping insertion in model container [2019-12-07 14:08:58,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:08:58" (3/3) ... [2019-12-07 14:08:58,065 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2019-12-07 14:08:58,072 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:08:58,076 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:08:58,083 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:08:58,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:08:58,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:08:58,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:08:58,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:08:58,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:08:58,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:08:58,098 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:08:58,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:08:58,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-12-07 14:08:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 14:08:58,110 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:08:58,111 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:08:58,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:08:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:08:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1394505008, now seen corresponding path program 1 times [2019-12-07 14:08:58,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:08:58,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605561006] [2019-12-07 14:08:58,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 14:08:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:08:58,245 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 14:08:58,249 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:08:58,258 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 14:08:58,258 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:08:58,261 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 14:08:58,261 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605561006] [2019-12-07 14:08:58,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:08:58,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 14:08:58,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905969649] [2019-12-07 14:08:58,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:08:58,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:08:58,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:08:58,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:08:58,281 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-12-07 14:08:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:08:58,297 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2019-12-07 14:08:58,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:08:58,298 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-12-07 14:08:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:08:58,305 INFO L225 Difference]: With dead ends: 69 [2019-12-07 14:08:58,306 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 14:08:58,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 14:08:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 14:08:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 14:08:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 14:08:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2019-12-07 14:08:58,335 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 12 [2019-12-07 14:08:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:08:58,336 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2019-12-07 14:08:58,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:08:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2019-12-07 14:08:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:08:58,336 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:08:58,336 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:08:58,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 14:08:58,538 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:08:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:08:58,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1007782307, now seen corresponding path program 1 times [2019-12-07 14:08:58,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:08:58,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860935074] [2019-12-07 14:08:58,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 14:08:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:08:58,686 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 14:08:58,687 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:08:58,695 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 14:08:58,696 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:08:58,698 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 14:08:58,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860935074] [2019-12-07 14:08:58,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:08:58,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 14:08:58,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107044645] [2019-12-07 14:08:58,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:08:58,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:08:58,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:08:58,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:08:58,700 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 3 states. [2019-12-07 14:08:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:08:58,722 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2019-12-07 14:08:58,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:08:58,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-12-07 14:08:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:08:58,723 INFO L225 Difference]: With dead ends: 57 [2019-12-07 14:08:58,724 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 14:08:58,724 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:08:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 14:08:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 14:08:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 14:08:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2019-12-07 14:08:58,729 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 13 [2019-12-07 14:08:58,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:08:58,730 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2019-12-07 14:08:58,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:08:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2019-12-07 14:08:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 14:08:58,731 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:08:58,731 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 14:08:58,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 14:08:58,932 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:08:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:08:58,932 INFO L82 PathProgramCache]: Analyzing trace with hash 32951480, now seen corresponding path program 1 times [2019-12-07 14:08:58,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:08:58,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023718332] [2019-12-07 14:08:58,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 14:08:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:08:59,099 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:08:59,101 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:08:59,257 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 14:08:59,257 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:08:59,390 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 14:08:59,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023718332] [2019-12-07 14:08:59,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:08:59,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 14:08:59,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76215257] [2019-12-07 14:08:59,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 14:08:59,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 14:08:59,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 14:08:59,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 14:08:59,392 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 10 states. [2019-12-07 14:09:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:09:03,053 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2019-12-07 14:09:03,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:09:03,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-12-07 14:09:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:09:03,080 INFO L225 Difference]: With dead ends: 37 [2019-12-07 14:09:03,080 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 14:09:03,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:09:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 14:09:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 14:09:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 14:09:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-12-07 14:09:03,083 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2019-12-07 14:09:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:09:03,083 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-12-07 14:09:03,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 14:09:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-12-07 14:09:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 14:09:03,084 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:09:03,084 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 14:09:03,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 14:09:03,285 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:09:03,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:09:03,286 INFO L82 PathProgramCache]: Analyzing trace with hash -677236169, now seen corresponding path program 1 times [2019-12-07 14:09:03,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 14:09:03,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086127792] [2019-12-07 14:09:03,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/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 14:09:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:09:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:09:05,191 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 14:09:05,192 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:09:05,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 14:09:05,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:09:05 BoogieIcfgContainer [2019-12-07 14:09:05,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:09:05,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:09:05,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:09:05,456 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:09:05,456 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:08:58" (3/4) ... [2019-12-07 14:09:05,458 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:09:05,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3985cfd7-292d-4b31-ae77-e76dbc823527/bin/utaipan/witness.graphml [2019-12-07 14:09:05,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:09:05,514 INFO L168 Benchmark]: Toolchain (without parser) took 29767.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 952.4 MB in the beginning and 938.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 132.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:09:05,514 INFO L168 Benchmark]: CDTParser took 0.12 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 14:09:05,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:09:05,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.30 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:09:05,515 INFO L168 Benchmark]: Boogie Preprocessor took 29.39 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 14:09:05,515 INFO L168 Benchmark]: RCFGBuilder took 22011.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:09:05,515 INFO L168 Benchmark]: TraceAbstraction took 7394.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 938.7 MB in the end (delta: 125.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:09:05,515 INFO L168 Benchmark]: Witness Printer took 56.69 ms. Allocated memory is still 1.1 GB. Free memory is still 938.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:09:05,517 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 236.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.30 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.39 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 22011.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7394.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 938.7 MB in the end (delta: 125.1 MB). Peak memory consumption was 125.1 MB. Max. memory is 11.5 GB. * Witness Printer took 56.69 ms. Allocated memory is still 1.1 GB. Free memory is still 938.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 154]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L146] double x = __VERIFIER_nondet_double(); [L148] EXPR x < 0 && isfinite_double(x) [L127] __int32_t hx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L129] ieee_double_shape_type gh_u; [L130] gh_u.value = (x) [L131] EXPR gh_u.parts.msw [L131] (hx) = gh_u.parts.msw [L133] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L148] EXPR x < 0 && isfinite_double(x) VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L148] COND TRUE (x < 0 && isfinite_double(x)) [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L58] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L150] double res = __ieee754_log(x); [L137] return x != x; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L153] COND TRUE !isnan_double(res) [L154] __VERIFIER_error() VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: UNSAFE, OverallTime: 7.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 82 SDslu, 57 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 17 QuantifiedInterpolants, 4426 SizeOfPredicates, 8 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 11 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...