./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 966074c4bc45853152b23ed1081806a59c179b92 ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 966074c4bc45853152b23ed1081806a59c179b92 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:56:56,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:56:56,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:56:56,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:56:56,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:56:56,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:56:56,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:56:56,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:56:56,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:56:56,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:56:56,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:56:56,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:56:56,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:56:56,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:56:56,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:56:56,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:56:56,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:56:56,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:56:56,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:56:56,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:56:56,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:56:56,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:56:56,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:56:56,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:56:56,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:56:56,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:56:56,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:56:56,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:56:56,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:56:56,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:56:56,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:56:56,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:56:56,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:56:56,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:56:56,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:56:56,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:56:56,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:56:56,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:56:56,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:56:56,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:56:56,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:56:56,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:56:57,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:56:57,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:56:57,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:56:57,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:56:57,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:56:57,012 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:56:57,012 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:56:57,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:56:57,012 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:56:57,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:56:57,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:56:57,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:56:57,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:56:57,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:56:57,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:56:57,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:56:57,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:56:57,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:56:57,015 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 966074c4bc45853152b23ed1081806a59c179b92 [2020-12-09 07:56:57,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:56:57,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:56:57,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:56:57,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:56:57,225 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:56:57,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-12-09 07:56:57,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/175bda08e/0a4ac98422834c078c1e79e15e91aa8e/FLAG346747be3 [2020-12-09 07:56:57,650 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:56:57,651 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-12-09 07:56:57,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/175bda08e/0a4ac98422834c078c1e79e15e91aa8e/FLAG346747be3 [2020-12-09 07:56:57,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/175bda08e/0a4ac98422834c078c1e79e15e91aa8e [2020-12-09 07:56:57,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:56:57,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:56:57,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:56:57,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:56:57,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:56:57,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b1efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57, skipping insertion in model container [2020-12-09 07:56:57,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:56:57,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:56:57,855 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c[3930,3943] [2020-12-09 07:56:57,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:56:57,867 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:56:57,901 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c[3930,3943] [2020-12-09 07:56:57,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:56:57,917 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:56:57,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57 WrapperNode [2020-12-09 07:56:57,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:56:57,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:56:57,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:56:57,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:56:57,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:56:57,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:56:57,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:56:57,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:56:57,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... [2020-12-09 07:56:57,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:56:57,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:56:57,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:56:57,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:56:57,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/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 [2020-12-09 07:56:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:56:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-09 07:56:58,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 07:56:58,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:56:58,426 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-09 07:56:58,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:56:58 BoogieIcfgContainer [2020-12-09 07:56:58,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:56:58,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:56:58,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:56:58,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:56:58,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:56:57" (1/3) ... [2020-12-09 07:56:58,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30abcc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:56:58, skipping insertion in model container [2020-12-09 07:56:58,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:56:57" (2/3) ... [2020-12-09 07:56:58,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30abcc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:56:58, skipping insertion in model container [2020-12-09 07:56:58,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:56:58" (3/3) ... [2020-12-09 07:56:58,434 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620a.c [2020-12-09 07:56:58,444 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:56:58,446 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:56:58,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:56:58,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:56:58,471 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:56:58,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:56:58,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:56:58,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:56:58,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:56:58,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:56:58,472 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:56:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-09 07:56:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:56:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:56:58,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:56:58,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:56:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:56:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1404764399, now seen corresponding path program 1 times [2020-12-09 07:56:58,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:56:58,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114426609] [2020-12-09 07:56:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:56:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:56:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:56:58,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114426609] [2020-12-09 07:56:58,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:56:58,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:56:58,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326936694] [2020-12-09 07:56:58,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:56:58,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:56:58,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:56:58,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:56:58,639 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-09 07:56:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:56:58,653 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-12-09 07:56:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:56:58,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 07:56:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:56:58,659 INFO L225 Difference]: With dead ends: 55 [2020-12-09 07:56:58,659 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 07:56:58,661 INFO L677 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 [2020-12-09 07:56:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 07:56:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 07:56:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 07:56:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-12-09 07:56:58,683 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 10 [2020-12-09 07:56:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:56:58,683 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-12-09 07:56:58,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:56:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-12-09 07:56:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 07:56:58,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:56:58,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:56:58,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:56:58,685 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:56:58,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:56:58,685 INFO L82 PathProgramCache]: Analyzing trace with hash 803283313, now seen corresponding path program 1 times [2020-12-09 07:56:58,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:56:58,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61000379] [2020-12-09 07:56:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:56:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:56:58,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:56:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:56:58,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:56:58,796 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:56:58,797 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:56:58,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:56:58,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:56:58 BoogieIcfgContainer [2020-12-09 07:56:58,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:56:58,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:56:58,823 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:56:58,824 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:56:58,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:56:58" (3/4) ... [2020-12-09 07:56:58,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 07:56:58,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:56:58,828 INFO L168 Benchmark]: Toolchain (without parser) took 1157.87 ms. Allocated memory is still 130.0 MB. Free memory was 93.5 MB in the beginning and 76.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:56:58,828 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 130.0 MB. Free memory is still 109.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:56:58,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.29 ms. Allocated memory is still 130.0 MB. Free memory was 93.3 MB in the beginning and 102.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:56:58,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 130.0 MB. Free memory was 102.3 MB in the beginning and 100.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:56:58,830 INFO L168 Benchmark]: Boogie Preprocessor took 25.24 ms. Allocated memory is still 130.0 MB. Free memory was 100.2 MB in the beginning and 98.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:56:58,830 INFO L168 Benchmark]: RCFGBuilder took 450.40 ms. Allocated memory is still 130.0 MB. Free memory was 98.2 MB in the beginning and 62.0 MB in the end (delta: 36.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:56:58,830 INFO L168 Benchmark]: TraceAbstraction took 393.89 ms. Allocated memory is still 130.0 MB. Free memory was 61.6 MB in the beginning and 76.2 MB in the end (delta: -14.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:56:58,831 INFO L168 Benchmark]: Witness Printer took 3.11 ms. Allocated memory is still 130.0 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:56:58,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 130.0 MB. Free memory is still 109.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.29 ms. Allocated memory is still 130.0 MB. Free memory was 93.3 MB in the beginning and 102.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 130.0 MB. Free memory was 102.3 MB in the beginning and 100.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.24 ms. Allocated memory is still 130.0 MB. Free memory was 100.2 MB in the beginning and 98.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 450.40 ms. Allocated memory is still 130.0 MB. Free memory was 98.2 MB in the beginning and 62.0 MB in the end (delta: 36.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 393.89 ms. Allocated memory is still 130.0 MB. Free memory was 61.6 MB in the beginning and 76.2 MB in the end (delta: -14.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.11 ms. Allocated memory is still 130.0 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 161]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of someBinaryDOUBLEComparisonOperation at line 160. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L156] double x = -0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND FALSE !(ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0))) [L85] COND TRUE hx > 0 [L86] EXPR atanhi_atan[3] [L86] EXPR atanlo_atan[3] [L86] return atanhi_atan[3] + atanlo_atan[3]; [L157] double res = atan_double(x); [L160] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L160] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L161] reach_error() VAL [aT_atan={10:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 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=28occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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, ACCELERATED_INTERPOLATION: 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 0.2.0-7b2dab5 [2020-12-09 07:57:00,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:57:00,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:57:00,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:57:00,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:57:00,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:57:00,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:57:00,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:57:00,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:57:00,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:57:00,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:57:00,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:57:00,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:57:00,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:57:00,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:57:00,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:57:00,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:57:00,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:57:00,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:57:00,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:57:00,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:57:00,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:57:00,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:57:00,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:57:00,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:57:00,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:57:00,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:57:00,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:57:00,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:57:00,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:57:00,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:57:00,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:57:00,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:57:00,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:57:00,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:57:00,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:57:00,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:57:00,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:57:00,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:57:00,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:57:00,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:57:00,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 07:57:00,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:57:00,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:57:00,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:57:00,487 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:57:00,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:57:00,487 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:57:00,487 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:57:00,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:57:00,488 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:57:00,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:57:00,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:57:00,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 07:57:00,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:57:00,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:57:00,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:57:00,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:57:00,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:57:00,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 07:57:00,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:57:00,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:57:00,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:57:00,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:57:00,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:57:00,503 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 07:57:00,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 07:57:00,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:57:00,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:57:00,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:57:00,504 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 966074c4bc45853152b23ed1081806a59c179b92 [2020-12-09 07:57:00,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:57:00,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:57:00,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:57:00,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:57:00,777 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:57:00,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-12-09 07:57:00,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/25c7012e1/fa922c4ab4e74eff8d90a2daa573b41f/FLAG4e12ba1ec [2020-12-09 07:57:01,225 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:57:01,225 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-12-09 07:57:01,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/25c7012e1/fa922c4ab4e74eff8d90a2daa573b41f/FLAG4e12ba1ec [2020-12-09 07:57:01,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/data/25c7012e1/fa922c4ab4e74eff8d90a2daa573b41f [2020-12-09 07:57:01,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:57:01,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:57:01,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:57:01,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:57:01,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:57:01,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df700cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01, skipping insertion in model container [2020-12-09 07:57:01,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:57:01,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:57:01,407 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c[3930,3943] [2020-12-09 07:57:01,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:57:01,420 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:57:01,453 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c[3930,3943] [2020-12-09 07:57:01,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:57:01,489 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:57:01,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01 WrapperNode [2020-12-09 07:57:01,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:57:01,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:57:01,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:57:01,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:57:01,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:57:01,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:57:01,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:57:01,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:57:01,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... [2020-12-09 07:57:01,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:57:01,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:57:01,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:57:01,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:57:01,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/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 [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 07:57:01,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:57:01,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:57:01,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 07:57:01,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 07:57:18,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:57:18,565 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-09 07:57:18,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:57:18 BoogieIcfgContainer [2020-12-09 07:57:18,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:57:18,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:57:18,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:57:18,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:57:18,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:57:01" (1/3) ... [2020-12-09 07:57:18,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a11c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:57:18, skipping insertion in model container [2020-12-09 07:57:18,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:57:01" (2/3) ... [2020-12-09 07:57:18,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184a11c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:57:18, skipping insertion in model container [2020-12-09 07:57:18,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:57:18" (3/3) ... [2020-12-09 07:57:18,573 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620a.c [2020-12-09 07:57:18,585 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:57:18,588 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:57:18,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:57:18,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:57:18,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:57:18,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:57:18,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:57:18,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:57:18,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:57:18,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:57:18,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:57:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-09 07:57:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 07:57:18,629 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:57:18,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:57:18,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:57:18,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:57:18,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2040843078, now seen corresponding path program 1 times [2020-12-09 07:57:18,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:57:18,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897883151] [2020-12-09 07:57:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/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 [2020-12-09 07:57:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:57:18,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 07:57:18,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:57:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:57:18,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:57:18,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897883151] [2020-12-09 07:57:18,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:57:18,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:57:18,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614744194] [2020-12-09 07:57:18,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:57:18,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:57:18,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:57:18,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:57:18,964 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-09 07:57:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:57:18,978 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-12-09 07:57:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:57:18,979 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-09 07:57:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:57:18,985 INFO L225 Difference]: With dead ends: 76 [2020-12-09 07:57:18,985 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 07:57:18,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:57:18,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 07:57:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-09 07:57:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 07:57:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2020-12-09 07:57:19,012 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 11 [2020-12-09 07:57:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:57:19,012 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2020-12-09 07:57:19,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:57:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2020-12-09 07:57:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:57:19,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:57:19,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:57:19,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 07:57:19,215 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:57:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:57:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1316832376, now seen corresponding path program 1 times [2020-12-09 07:57:19,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:57:19,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5151869] [2020-12-09 07:57:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/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 [2020-12-09 07:57:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:57:19,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 07:57:19,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:57:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:57:19,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:57:19,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5151869] [2020-12-09 07:57:19,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:57:19,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:57:19,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618521507] [2020-12-09 07:57:19,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:57:19,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:57:19,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:57:19,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:57:19,920 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand 5 states. [2020-12-09 07:57:20,157 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:57:20,382 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-12-09 07:57:29,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:57:29,133 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2020-12-09 07:57:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:57:29,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 07:57:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:57:29,135 INFO L225 Difference]: With dead ends: 59 [2020-12-09 07:57:29,135 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 07:57:29,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:57:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 07:57:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-09 07:57:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 07:57:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-09 07:57:29,141 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2020-12-09 07:57:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:57:29,141 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-09 07:57:29,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:57:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-09 07:57:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:57:29,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:57:29,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:57:29,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 07:57:29,344 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:57:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:57:29,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1440122883, now seen corresponding path program 1 times [2020-12-09 07:57:29,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:57:29,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782764912] [2020-12-09 07:57:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/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 [2020-12-09 07:57:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:57:29,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:57:29,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:57:30,270 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 1 [2020-12-09 07:57:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:57:30,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:57:30,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782764912] [2020-12-09 07:57:30,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:57:30,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:57:30,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072772334] [2020-12-09 07:57:30,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:57:30,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:57:30,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:57:30,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:57:30,276 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-12-09 07:57:30,859 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-09 07:57:31,355 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-09 07:57:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:57:41,621 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-12-09 07:57:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:57:41,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 07:57:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:57:41,623 INFO L225 Difference]: With dead ends: 35 [2020-12-09 07:57:41,623 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 07:57:41,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:57:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 07:57:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-12-09 07:57:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 07:57:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-12-09 07:57:41,628 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-12-09 07:57:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:57:41,629 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-12-09 07:57:41,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:57:41,629 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-12-09 07:57:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 07:57:41,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:57:41,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:57:41,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 07:57:41,832 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:57:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:57:41,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1041172097, now seen corresponding path program 1 times [2020-12-09 07:57:41,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:57:41,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223869435] [2020-12-09 07:57:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 07:57:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:57:45,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:57:45,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:57:45,839 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 07:57:46,171 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:57:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:57:46,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:57:46,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223869435] [2020-12-09 07:57:46,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:57:46,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:57:46,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547184392] [2020-12-09 07:57:46,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:57:46,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:57:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:57:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:57:46,206 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2020-12-09 07:57:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:57:46,357 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-09 07:57:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:57:46,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 07:57:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:57:46,366 INFO L225 Difference]: With dead ends: 32 [2020-12-09 07:57:46,366 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 07:57:46,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:57:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 07:57:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 07:57:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 07:57:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-12-09 07:57:46,369 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-12-09 07:57:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:57:46,370 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-12-09 07:57:46,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:57:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-12-09 07:57:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 07:57:46,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:57:46,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:57:46,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 07:57:46,572 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:57:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:57:46,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1453962584, now seen corresponding path program 1 times [2020-12-09 07:57:46,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:57:46,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294807627] [2020-12-09 07:57:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 07:57:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:57:46,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 07:57:46,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:57:47,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 07:57:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:57:48,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:57:48,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294807627] [2020-12-09 07:57:48,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:57:48,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-09 07:57:48,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016715921] [2020-12-09 07:57:48,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 07:57:48,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:57:48,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 07:57:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-09 07:57:48,566 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 9 states. [2020-12-09 07:57:49,554 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-09 07:57:49,954 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-09 07:57:50,411 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-09 07:57:50,849 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 07:57:51,303 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 07:57:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:57:51,337 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-12-09 07:57:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:57:51,338 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-09 07:57:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:57:51,338 INFO L225 Difference]: With dead ends: 18 [2020-12-09 07:57:51,338 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:57:51,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:57:51,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:57:51,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:57:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:57:51,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:57:51,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 07:57:51,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:57:51,340 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:57:51,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 07:57:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:57:51,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:57:51,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 07:57:51,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:57:52,145 WARN L197 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-09 07:57:52,445 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 07:57:52,926 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 07:57:53,167 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 07:57:53,170 INFO L262 CegarLoopResult]: For program point L85(lines 85 88) no Hoare annotation was computed. [2020-12-09 07:57:53,170 INFO L262 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-12-09 07:57:53,171 INFO L262 CegarLoopResult]: For program point L160-2(lines 160 163) no Hoare annotation was computed. [2020-12-09 07:57:53,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:57:53,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 07:57:53,171 INFO L262 CegarLoopResult]: For program point L78-1(lines 78 82) no Hoare annotation was computed. [2020-12-09 07:57:53,171 INFO L258 CegarLoopResult]: At program point L78-2(lines 78 82) the Hoare annotation is: false [2020-12-09 07:57:53,171 INFO L262 CegarLoopResult]: For program point L78-3(lines 76 89) no Hoare annotation was computed. [2020-12-09 07:57:53,171 INFO L262 CegarLoopResult]: For program point L70-1(lines 70 74) no Hoare annotation was computed. [2020-12-09 07:57:53,172 INFO L258 CegarLoopResult]: At program point L70-2(lines 70 74) the Hoare annotation is: (and (= ((_ to_fp 11 53) currentRoundingMode 1.0) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= ~huge_atan~0 ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) (= ULTIMATE.start_atan_double_~x (fp.neg (_ +zero 11 53)))) [2020-12-09 07:57:53,172 INFO L262 CegarLoopResult]: For program point L70-3(lines 70 74) no Hoare annotation was computed. [2020-12-09 07:57:53,172 INFO L262 CegarLoopResult]: For program point L161(line 161) no Hoare annotation was computed. [2020-12-09 07:57:53,172 INFO L262 CegarLoopResult]: For program point L128(lines 128 133) no Hoare annotation was computed. [2020-12-09 07:57:53,172 INFO L262 CegarLoopResult]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2020-12-09 07:57:53,172 INFO L258 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: false [2020-12-09 07:57:53,173 INFO L258 CegarLoopResult]: At program point L145(lines 136 146) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ((_ to_fp 11 53) currentRoundingMode 1.0) ~one_atan~0) (= .cse0 ULTIMATE.start_main_~res~0) (= currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_14| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_14|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_14|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_14|)) (fp.neg (_ +zero 11 53))) (= ULTIMATE.start___signbit_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_14|)))) (= ~huge_atan~0 ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) |ULTIMATE.start_main_#t~short33| (= ULTIMATE.start___signbit_double_~x .cse0) (= |ULTIMATE.start_atan_double_#res| .cse0) (= ULTIMATE.start_atan_double_~x .cse0) (= (bvadd |ULTIMATE.start___signbit_double_#res| (_ bv4294967295 32)) (_ bv0 32)))) [2020-12-09 07:57:53,173 INFO L262 CegarLoopResult]: For program point L139-1(lines 139 143) no Hoare annotation was computed. [2020-12-09 07:57:53,173 INFO L258 CegarLoopResult]: At program point L139-2(lines 139 143) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ((_ to_fp 11 53) currentRoundingMode 1.0) ~one_atan~0) (= .cse0 ULTIMATE.start_main_~res~0) (= currentRoundingMode roundNearestTiesToEven) (= ~huge_atan~0 ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) |ULTIMATE.start_main_#t~short33| (= ULTIMATE.start___signbit_double_~x .cse0) (= |ULTIMATE.start_atan_double_#res| .cse0) (= ULTIMATE.start_atan_double_~x .cse0))) [2020-12-09 07:57:53,173 INFO L262 CegarLoopResult]: For program point L139-3(lines 139 143) no Hoare annotation was computed. [2020-12-09 07:57:53,173 INFO L262 CegarLoopResult]: For program point L98(lines 98 114) no Hoare annotation was computed. [2020-12-09 07:57:53,173 INFO L258 CegarLoopResult]: At program point L32(lines 19 33) the Hoare annotation is: false [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L90(lines 90 115) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L107(lines 107 113) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L107-2(lines 90 115) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L265 CegarLoopResult]: At program point L165(lines 148 166) the Hoare annotation is: true [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L99(lines 99 105) no Hoare annotation was computed. [2020-12-09 07:57:53,174 INFO L262 CegarLoopResult]: For program point L132-2(line 132) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L258 CegarLoopResult]: At program point L132-3(lines 66 134) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ((_ to_fp 11 53) currentRoundingMode 1.0) ~one_atan~0) (= currentRoundingMode roundNearestTiesToEven) (= ~huge_atan~0 ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.0)) (= |ULTIMATE.start_atan_double_#res| .cse0) (= ULTIMATE.start_atan_double_~x .cse0))) [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L91(lines 91 94) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L91-2(lines 91 94) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L92(lines 92 93) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L26(lines 26 31) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L26-1(lines 19 33) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L26-2(lines 26 31) no Hoare annotation was computed. [2020-12-09 07:57:53,175 INFO L262 CegarLoopResult]: For program point L76(lines 76 89) no Hoare annotation was computed. [2020-12-09 07:57:53,186 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,189 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,190 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,190 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,190 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,191 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,191 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,192 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,192 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,193 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,193 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,194 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,195 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:57:53 BoogieIcfgContainer [2020-12-09 07:57:53,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:57:53,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:57:53,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:57:53,197 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:57:53,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:57:18" (3/4) ... [2020-12-09 07:57:53,200 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:57:53,210 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-12-09 07:57:53,210 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 07:57:53,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:57:53,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:57:53,230 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2020-12-09 07:57:53,230 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2020-12-09 07:57:53,231 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_skolemized_q#valueAsBitvector_14 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_14[63:63], v_skolemized_q#valueAsBitvector_14[62:52], v_skolemized_q#valueAsBitvector_14[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && msw == v_skolemized_q#valueAsBitvector_14[63:32])) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32 [2020-12-09 07:57:53,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6b6f6c20-fbd1-4b23-8872-9388a4dcaac0/bin/utaipan/witness.graphml [2020-12-09 07:57:53,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:57:53,262 INFO L168 Benchmark]: Toolchain (without parser) took 52016.17 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 46.1 MB in the beginning and 77.6 MB in the end (delta: -31.5 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.1 GB. [2020-12-09 07:57:53,263 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:57:53,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.96 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 47.8 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:57:53,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.53 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 45.3 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:57:53,264 INFO L168 Benchmark]: Boogie Preprocessor took 42.73 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 43.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:57:53,264 INFO L168 Benchmark]: RCFGBuilder took 16984.17 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 43.0 MB in the beginning and 64.3 MB in the end (delta: -21.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:57:53,264 INFO L168 Benchmark]: TraceAbstraction took 34628.19 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 40.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:57:53,265 INFO L168 Benchmark]: Witness Printer took 64.99 ms. Allocated memory is still 98.6 MB. Free memory was 40.6 MB in the beginning and 77.6 MB in the end (delta: -37.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:57:53,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.96 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 47.8 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.53 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 45.3 MB in the end (delta: 2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.73 ms. Allocated memory is still 65.0 MB. Free memory was 45.3 MB in the beginning and 43.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 16984.17 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 43.0 MB in the beginning and 64.3 MB in the end (delta: -21.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34628.19 ms. Allocated memory is still 98.6 MB. Free memory was 64.3 MB in the beginning and 40.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Witness Printer took 64.99 ms. Allocated memory is still 98.6 MB. Free memory was 40.6 MB in the beginning and 77.6 MB in the end (delta: -37.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 66]: Loop Invariant [2020-12-09 07:57:53,272 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,273 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 136]: Loop Invariant [2020-12-09 07:57:53,273 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,273 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,273 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,274 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,274 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,274 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,275 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,275 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,275 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] [2020-12-09 07:57:53,275 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_14,QUANTIFIED] Derived loop invariant: ((((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists v_skolemized_q#valueAsBitvector_14 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_14[63:63], v_skolemized_q#valueAsBitvector_14[62:52], v_skolemized_q#valueAsBitvector_14[51:0]) == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && msw == v_skolemized_q#valueAsBitvector_14[63:32])) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32 - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 139]: Loop Invariant [2020-12-09 07:57:53,276 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,277 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((((((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == res) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && aux-res == -0.0 && __signbit_double(res) == 1-aux) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 70]: Loop Invariant [2020-12-09 07:57:53,277 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-09 07:57:53,278 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) == one_atan && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E300)) && x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 123 SDslu, 128 SDs, 0 SdLazy, 61 SolverSat, 11 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 13 NumberOfFragments, 127 HoareAnnotationTreeSize, 8 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 5 QuantifiedInterpolants, 4761 SizeOfPredicates, 28 NumberOfNonLiveVariables, 613 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...