./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.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_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 .............................................................................................................................................................................................................................................................................................. 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_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c -s /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:40:18,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:40:18,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:40:18,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:40:18,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:40:18,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:40:18,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:40:18,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:40:18,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:40:18,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:40:18,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:40:18,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:40:18,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:40:18,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:40:18,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:40:18,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:40:18,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:40:18,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:40:18,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:40:18,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:40:18,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:40:18,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:40:18,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:40:18,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:40:18,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:40:18,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:40:18,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:40:18,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:40:18,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:40:18,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:40:18,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:40:18,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:40:18,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:40:18,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:40:18,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:40:18,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:40:18,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:40:18,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:40:18,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:40:18,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:40:18,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:40:18,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:40:18,328 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:40:18,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:40:18,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:40:18,329 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:40:18,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:40:18,329 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:40:18,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:40:18,330 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:40:18,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:40:18,330 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:40:18,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:40:18,330 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:40:18,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:40:18,331 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:40:18,331 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:40:18,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:40:18,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:40:18,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:40:18,332 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:40:18,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:40:18,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:40:18,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:40:18,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:40:18,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:40:18,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:40:18,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:40:18,334 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_98199b1d-818d-4824-89b6-90a16d9e5c85/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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 [2019-12-07 16:40:18,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:40:18,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:40:18,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:40:18,447 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:40:18,447 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:40:18,447 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-12-07 16:40:18,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/fbe669538/bbbdecb44e41452fb66d252acd32b0d5/FLAG45b432176 [2019-12-07 16:40:18,875 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:40:18,875 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-12-07 16:40:18,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/fbe669538/bbbdecb44e41452fb66d252acd32b0d5/FLAG45b432176 [2019-12-07 16:40:18,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/fbe669538/bbbdecb44e41452fb66d252acd32b0d5 [2019-12-07 16:40:18,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:40:18,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:40:18,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:40:18,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:40:18,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:40:18,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:40:18" (1/1) ... [2019-12-07 16:40:18,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17df66d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:18, skipping insertion in model container [2019-12-07 16:40:18,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:40:18" (1/1) ... [2019-12-07 16:40:18,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:40:18,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:40:19,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:40:19,065 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:40:19,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:40:19,097 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:40:19,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19 WrapperNode [2019-12-07 16:40:19,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:40:19,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:40:19,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:40:19,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:40:19,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:40:19,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:40:19,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:40:19,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:40:19,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... [2019-12-07 16:40:19,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:40:19,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:40:19,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:40:19,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:40:19,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:40:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 16:40:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:40:19,414 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:40:19,414 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 16:40:19,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:40:19 BoogieIcfgContainer [2019-12-07 16:40:19,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:40:19,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:40:19,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:40:19,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:40:19,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:40:18" (1/3) ... [2019-12-07 16:40:19,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee2d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:40:19, skipping insertion in model container [2019-12-07 16:40:19,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:19" (2/3) ... [2019-12-07 16:40:19,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee2d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:40:19, skipping insertion in model container [2019-12-07 16:40:19,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:40:19" (3/3) ... [2019-12-07 16:40:19,422 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2019-12-07 16:40:19,429 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:40:19,434 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:40:19,441 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:40:19,457 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:40:19,457 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:40:19,457 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:40:19,457 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:40:19,457 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:40:19,457 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:40:19,458 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:40:19,458 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:40:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-12-07 16:40:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 16:40:19,474 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:40:19,475 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:40:19,475 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:40:19,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:40:19,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1229529737, now seen corresponding path program 1 times [2019-12-07 16:40:19,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:40:19,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367175013] [2019-12-07 16:40:19,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:40:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:40:19,561 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 16:40:19,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367175013] [2019-12-07 16:40:19,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:40:19,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:40:19,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109831785] [2019-12-07 16:40:19,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 16:40:19,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:40:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 16:40:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 16:40:19,578 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-12-07 16:40:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:40:19,589 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2019-12-07 16:40:19,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 16:40:19,590 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-12-07 16:40:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:40:19,598 INFO L225 Difference]: With dead ends: 31 [2019-12-07 16:40:19,598 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 16:40:19,600 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 16:40:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 16:40:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 16:40:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 16:40:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-12-07 16:40:19,621 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2019-12-07 16:40:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:40:19,621 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 16:40:19,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 16:40:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-12-07 16:40:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 16:40:19,621 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:40:19,621 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:40:19,622 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:40:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:40:19,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1601519704, now seen corresponding path program 1 times [2019-12-07 16:40:19,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:40:19,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862900109] [2019-12-07 16:40:19,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:40:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:40:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:40:19,693 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 16:40:19,693 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:40:19,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:40:19 BoogieIcfgContainer [2019-12-07 16:40:19,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:40:19,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:40:19,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:40:19,711 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:40:19,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:40:19" (3/4) ... [2019-12-07 16:40:19,713 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:40:19,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:40:19,715 INFO L168 Benchmark]: Toolchain (without parser) took 823.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -85.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:19,715 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:40:19,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -152.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:19,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.78 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 16:40:19,716 INFO L168 Benchmark]: Boogie Preprocessor took 19.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:19,717 INFO L168 Benchmark]: RCFGBuilder took 269.03 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:19,717 INFO L168 Benchmark]: TraceAbstraction took 294.05 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:19,717 INFO L168 Benchmark]: Witness Printer took 3.06 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 16:40:19,720 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 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 206.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -152.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.78 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 19.05 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 269.03 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 294.05 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.06 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: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L66] float x = 0.0f / 0.0f; [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; VAL [huge_floor=1000000000000000000000000000000] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f VAL [huge_floor=1000000000000000000000000000000] [L24] COND FALSE !(j0 < 23) [L44] COND TRUE !((ix) < 0x7f800000L) [L45] return x + x; VAL [huge_floor=1000000000000000000000000000000] [L67] float res = floor_float(x); [L58] return x != x; [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 16:40:21,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:40:21,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:40:21,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:40:21,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:40:21,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:40:21,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:40:21,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:40:21,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:40:21,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:40:21,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:40:21,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:40:21,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:40:21,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:40:21,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:40:21,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:40:21,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:40:21,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:40:21,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:40:21,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:40:21,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:40:21,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:40:21,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:40:21,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:40:21,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:40:21,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:40:21,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:40:21,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:40:21,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:40:21,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:40:21,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:40:21,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:40:21,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:40:21,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:40:21,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:40:21,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:40:21,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:40:21,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:40:21,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:40:21,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:40:21,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:40:21,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 16:40:21,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:40:21,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:40:21,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:40:21,150 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:40:21,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:40:21,150 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:40:21,150 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:40:21,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:40:21,151 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:40:21,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:40:21,151 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:40:21,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:40:21,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:40:21,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:40:21,153 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:40:21,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:40:21,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:40:21,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:40:21,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:40:21,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:40:21,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:40:21,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:40:21,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:40:21,154 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_98199b1d-818d-4824-89b6-90a16d9e5c85/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 -> 863e70131520c7e8858a4f32bea4c5cffd3e6ae2 [2019-12-07 16:40:21,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:40:21,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:40:21,335 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:40:21,336 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:40:21,336 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:40:21,337 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-12-07 16:40:21,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/7c9f19a30/cc1d6d59f9d645ecabef481f14ac1309/FLAGa08514a12 [2019-12-07 16:40:21,724 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:40:21,724 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/sv-benchmarks/c/float-newlib/float_req_bl_1051.c [2019-12-07 16:40:21,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/7c9f19a30/cc1d6d59f9d645ecabef481f14ac1309/FLAGa08514a12 [2019-12-07 16:40:22,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/data/7c9f19a30/cc1d6d59f9d645ecabef481f14ac1309 [2019-12-07 16:40:22,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:40:22,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:40:22,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:40:22,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:40:22,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:40:22,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0f9973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22, skipping insertion in model container [2019-12-07 16:40:22,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:40:22,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:40:22,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:40:22,307 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:40:22,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:40:22,344 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:40:22,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22 WrapperNode [2019-12-07 16:40:22,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:40:22,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:40:22,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:40:22,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:40:22,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:40:22,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:40:22,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:40:22,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:40:22,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... [2019-12-07 16:40:22,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:40:22,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:40:22,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:40:22,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:40:22,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 16:40:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:40:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 16:40:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 16:40:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:40:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:40:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 16:40:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 16:40:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:40:22,888 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:40:22,889 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 16:40:22,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:40:22 BoogieIcfgContainer [2019-12-07 16:40:22,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:40:22,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:40:22,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:40:22,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:40:22,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:40:22" (1/3) ... [2019-12-07 16:40:22,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e96aaf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:40:22, skipping insertion in model container [2019-12-07 16:40:22,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:40:22" (2/3) ... [2019-12-07 16:40:22,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e96aaf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:40:22, skipping insertion in model container [2019-12-07 16:40:22,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:40:22" (3/3) ... [2019-12-07 16:40:22,895 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2019-12-07 16:40:22,901 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:40:22,905 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:40:22,913 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:40:22,927 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:40:22,927 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:40:22,927 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:40:22,927 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:40:22,928 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:40:22,928 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:40:22,928 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:40:22,928 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:40:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-12-07 16:40:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:40:22,940 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:40:22,941 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:40:22,941 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:40:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:40:22,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2019-12-07 16:40:22,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:40:22,952 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885554303] [2019-12-07 16:40:22,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 16:40:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:40:23,028 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 16:40:23,031 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:40:23,040 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 16:40:23,040 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:40:23,042 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 16:40:23,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885554303] [2019-12-07 16:40:23,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:40:23,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 16:40:23,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93455834] [2019-12-07 16:40:23,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 16:40:23,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:40:23,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 16:40:23,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 16:40:23,058 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-12-07 16:40:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:40:23,073 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2019-12-07 16:40:23,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 16:40:23,074 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 16:40:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:40:23,080 INFO L225 Difference]: With dead ends: 50 [2019-12-07 16:40:23,080 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 16:40:23,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 16:40:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 16:40:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 16:40:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 16:40:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-12-07 16:40:23,109 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2019-12-07 16:40:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:40:23,109 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-12-07 16:40:23,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 16:40:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-12-07 16:40:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 16:40:23,109 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:40:23,109 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:40:23,310 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:40:23,311 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:40:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:40:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2019-12-07 16:40:23,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:40:23,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406500023] [2019-12-07 16:40:23,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 16:40:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:40:23,384 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 16:40:23,385 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:40:23,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 16:40:23,458 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 16:40:23,458 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:40:23,515 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 16:40:23,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406500023] [2019-12-07 16:40:23,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:40:23,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-12-07 16:40:23,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527346034] [2019-12-07 16:40:23,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 16:40:23,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:40:23,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 16:40:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:40:23,518 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2019-12-07 16:40:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:40:23,936 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-12-07 16:40:23,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 16:40:23,937 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2019-12-07 16:40:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:40:23,937 INFO L225 Difference]: With dead ends: 34 [2019-12-07 16:40:23,937 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 16:40:23,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-12-07 16:40:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 16:40:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 16:40:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 16:40:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 16:40:23,941 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2019-12-07 16:40:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:40:23,941 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 16:40:23,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 16:40:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 16:40:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 16:40:23,941 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:40:23,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:40:24,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 16:40:24,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:40:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:40:24,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2019-12-07 16:40:24,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:40:24,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229758147] [2019-12-07 16:40:24,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/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 16:40:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:40:24,300 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 16:40:24,302 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:40:24,365 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 16:40:24,365 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:40:24,456 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 16:40:24,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229758147] [2019-12-07 16:40:24,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:40:24,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 16:40:24,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164017251] [2019-12-07 16:40:24,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 16:40:24,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:40:24,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 16:40:24,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 16:40:24,458 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2019-12-07 16:40:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:40:24,558 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 16:40:24,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:40:24,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 16:40:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:40:24,559 INFO L225 Difference]: With dead ends: 18 [2019-12-07 16:40:24,559 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:40:24,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-12-07 16:40:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:40:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:40:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:40:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:40:24,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-12-07 16:40:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:40:24,561 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:40:24,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 16:40:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:40:24,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:40:24,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 16:40:24,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:40:24,836 INFO L246 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2019-12-07 16:40:24,836 INFO L246 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2019-12-07 16:40:24,836 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-12-07 16:40:24,836 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:40:24,836 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 16:40:24,836 INFO L246 CegarLoopResult]: For program point L24(lines 24 48) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point L49(lines 49 53) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point L49-1(lines 14 55) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point L70(lines 70 73) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L246 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-12-07 16:40:24,837 INFO L242 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))) [2019-12-07 16:40:24,838 INFO L246 CegarLoopResult]: For program point L25(lines 25 42) no Hoare annotation was computed. [2019-12-07 16:40:24,838 INFO L242 CegarLoopResult]: At program point L54(lines 14 55) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (not (fp.eq |ULTIMATE.start_floor_float_#res| |ULTIMATE.start_floor_float_#res|))) [2019-12-07 16:40:24,838 INFO L246 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2019-12-07 16:40:24,838 INFO L242 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_floor_float_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2019-12-07 16:40:24,838 INFO L246 CegarLoopResult]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2019-12-07 16:40:24,838 INFO L249 CegarLoopResult]: At program point L75(lines 60 76) the Hoare annotation is: true [2019-12-07 16:40:24,838 INFO L246 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2019-12-07 16:40:24,838 INFO L246 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-12-07 16:40:24,838 INFO L246 CegarLoopResult]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2019-12-07 16:40:24,839 INFO L246 CegarLoopResult]: For program point L26(lines 26 32) no Hoare annotation was computed. [2019-12-07 16:40:24,839 INFO L246 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2019-12-07 16:40:24,843 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,848 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,849 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,849 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,850 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,850 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:40:24 BoogieIcfgContainer [2019-12-07 16:40:24,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:40:24,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:40:24,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:40:24,852 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:40:24,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:40:22" (3/4) ... [2019-12-07 16:40:24,855 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:40:24,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 16:40:24,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 16:40:24,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:40:24,880 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-12-07 16:40:24,881 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~FLOAT(\result, \result) [2019-12-07 16:40:24,881 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) [2019-12-07 16:40:24,898 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_98199b1d-818d-4824-89b6-90a16d9e5c85/bin/utaipan/witness.graphml [2019-12-07 16:40:24,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:40:24,899 INFO L168 Benchmark]: Toolchain (without parser) took 2747.72 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 952.4 MB in the beginning and 975.5 MB in the end (delta: -23.1 MB). Peak memory consumption was 96.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:24,899 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:40:24,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.70 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:24,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:24,900 INFO L168 Benchmark]: Boogie Preprocessor took 22.35 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 16:40:24,901 INFO L168 Benchmark]: RCFGBuilder took 460.49 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:24,901 INFO L168 Benchmark]: TraceAbstraction took 1961.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 975.5 MB in the end (delta: 108.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:40:24,901 INFO L168 Benchmark]: Witness Printer took 45.75 ms. Allocated memory is still 1.1 GB. Free memory is still 975.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:40:24,903 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.70 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.35 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 460.49 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1961.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 975.5 MB in the end (delta: 108.9 MB). Peak memory consumption was 108.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.75 ms. Allocated memory is still 1.1 GB. Free memory is still 975.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant [2019-12-07 16:40:24,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 58]: Loop Invariant [2019-12-07 16:40:24,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2019-12-07 16:40:24,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-12-07 16:40:24,908 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~FLOAT(\result, \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2730 SizeOfPredicates, 19 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 20 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 correct! Received shutdown request...