./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ..................................................................................................................................................................................................................................................................................................................... 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_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bb223ac5dd337697f7c4caeca580bc7e9e7345b8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:25:22,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:25:22,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:25:22,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:25:22,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:25:22,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:25:22,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:25:22,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:25:22,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:25:22,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:25:22,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:25:22,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:25:22,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:25:22,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:25:22,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:25:22,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:25:22,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:25:22,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:25:22,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:25:22,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:25:22,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:25:22,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:25:22,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:25:22,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:25:22,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:25:22,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:25:22,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:25:22,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:25:22,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:25:22,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:25:22,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:25:22,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:25:22,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:25:22,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:25:22,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:25:22,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:25:22,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:25:22,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:25:22,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:25:22,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:25:22,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:25:22,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:25:23,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:25:23,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:25:23,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:25:23,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:25:23,049 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:25:23,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:25:23,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:25:23,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:25:23,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:25:23,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:25:23,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:25:23,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:25:23,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:25:23,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:25:23,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:25:23,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:25:23,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:25:23,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:25:23,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:25:23,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:25:23,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:25:23,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:25:23,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:25:23,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:25:23,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:25:23,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:25:23,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:25:23,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:25:23,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:25:23,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-11-29 19:25:23,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:25:23,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:25:23,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:25:23,443 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:25:23,444 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:25:23,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-29 19:25:23,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/f66a1c2c9/ae999356690d4343afc83f03fc7db3bb/FLAGae381e067 [2020-11-29 19:25:24,093 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:25:24,094 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-29 19:25:24,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/f66a1c2c9/ae999356690d4343afc83f03fc7db3bb/FLAGae381e067 [2020-11-29 19:25:24,471 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/f66a1c2c9/ae999356690d4343afc83f03fc7db3bb [2020-11-29 19:25:24,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:25:24,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:25:24,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:24,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:25:24,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:25:24,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b14a21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24, skipping insertion in model container [2020-11-29 19:25:24,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:25:24,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:25:24,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:24,823 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:25:24,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:24,912 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:25:24,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24 WrapperNode [2020-11-29 19:25:24,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:24,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:25:24,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:25:24,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:25:24,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:25:24,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:25:24,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:25:24,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:25:24,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:24,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:25,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:25,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:25,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... [2020-11-29 19:25:25,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:25:25,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:25:25,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:25:25,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:25:25,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:25:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:25:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:25:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 19:25:25,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:25:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 19:25:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:25:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:25:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:25:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 19:25:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:25:25,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:25:25,714 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 19:25:25,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:25 BoogieIcfgContainer [2020-11-29 19:25:25,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:25:25,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:25:25,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:25:25,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:25:25,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:25:24" (1/3) ... [2020-11-29 19:25:25,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c54064f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:25, skipping insertion in model container [2020-11-29 19:25:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:24" (2/3) ... [2020-11-29 19:25:25,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c54064f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:25, skipping insertion in model container [2020-11-29 19:25:25,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:25" (3/3) ... [2020-11-29 19:25:25,727 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-11-29 19:25:25,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:25:25,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:25:25,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:25:25,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:25:25,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:25:25,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:25:25,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:25:25,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:25:25,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:25:25,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:25:25,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:25:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 19:25:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:25:25,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:25,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:25,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-11-29 19:25:25,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:25,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3052474] [2020-11-29 19:25:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:26,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3052474] [2020-11-29 19:25:26,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:26,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:25:26,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449379714] [2020-11-29 19:25:26,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:25:26,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:25:26,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:25:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:25:26,099 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-29 19:25:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:26,121 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-29 19:25:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:25:26,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:25:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:26,135 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:25:26,135 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 19:25:26,139 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 [2020-11-29 19:25:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 19:25:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 19:25:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 19:25:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-29 19:25:26,182 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-11-29 19:25:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:26,183 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-29 19:25:26,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:25:26,183 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-29 19:25:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:25:26,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:26,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:26,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:25:26,184 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:26,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:26,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-11-29 19:25:26,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:25:26,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808530319] [2020-11-29 19:25:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:25:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:25:26,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:25:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:25:26,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:25:26,396 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:25:26,396 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:25:26,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:25:26,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:25:26 BoogieIcfgContainer [2020-11-29 19:25:26,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:25:26,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:25:26,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:25:26,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:25:26,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:25" (3/4) ... [2020-11-29 19:25:26,487 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:25:26,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:25:26,493 INFO L168 Benchmark]: Toolchain (without parser) took 2010.69 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 64.1 MB in the beginning and 84.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:26,494 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 72.2 MB in the end (delta: 24.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:26,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.08 ms. Allocated memory is still 98.6 MB. Free memory was 63.9 MB in the beginning and 72.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:26,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 69.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:26,498 INFO L168 Benchmark]: Boogie Preprocessor took 45.80 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 68.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:26,500 INFO L168 Benchmark]: RCFGBuilder took 689.16 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 43.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:25:26,501 INFO L168 Benchmark]: TraceAbstraction took 761.76 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 43.4 MB in the beginning and 84.5 MB in the end (delta: -41.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:26,502 INFO L168 Benchmark]: Witness Printer took 7.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:25:26,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 72.2 MB in the end (delta: 24.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 433.08 ms. Allocated memory is still 98.6 MB. Free memory was 63.9 MB in the beginning and 72.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 69.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.80 ms. Allocated memory is still 98.6 MB. Free memory was 69.9 MB in the beginning and 68.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 689.16 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 43.8 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 761.76 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 43.4 MB in the beginning and 84.5 MB in the end (delta: -41.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.19 ms. Allocated memory is still 125.8 MB. Free memory is still 84.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 143, overapproximation of someUnaryDOUBLEoperation at line 46, overapproximation of bitwiseAnd at line 64, overapproximation of someUnaryFLOAToperation at line 139, overapproximation of someBinaryArithmeticFLOAToperation at line 67. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L31-L36] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L38-L43] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L45-L49] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L51-L53] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L139] float x = -0.0f; [L56] float w, s1, s2, z; [L57] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (hx) = gf_u.word [L64] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L65] COND TRUE ix >= 0x50800000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L66] COND TRUE ((ix) > 0x7f800000L) [L67] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L140] float res = atan_float(x); [L143] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L143] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_0620b.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 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=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 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-a4ecdab [2020-11-29 19:25:29,604 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 19:25:29,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:25:29,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:25:29,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:25:29,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:25:29,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:25:29,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:25:29,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:25:29,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:25:29,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:25:29,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:25:29,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:25:29,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:25:29,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:25:29,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:25:29,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:25:29,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:25:29,866 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:25:29,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:25:29,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:25:29,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:25:29,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:25:29,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:25:29,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:25:29,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:25:29,869 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:25:29,869 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:25:29,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:25:29,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:25:29,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:25:29,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:25:29,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:25:29,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:25:29,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:25:29,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:25:29,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:25:29,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:25:29,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:25:29,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:25:29,872 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:25:29,873 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:25:29,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:25:29,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:25:29,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:25:29,874 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_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb223ac5dd337697f7c4caeca580bc7e9e7345b8 [2020-11-29 19:25:30,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:25:30,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:25:30,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:25:30,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:25:30,463 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:25:30,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-29 19:25:30,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/7bc0bb33f/6aaffbaf772f4d01ac2d21653f808b61/FLAGa8db80152 [2020-11-29 19:25:31,207 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:25:31,211 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/sv-benchmarks/c/float-newlib/float_req_bl_0620b.c [2020-11-29 19:25:31,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/7bc0bb33f/6aaffbaf772f4d01ac2d21653f808b61/FLAGa8db80152 [2020-11-29 19:25:31,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/data/7bc0bb33f/6aaffbaf772f4d01ac2d21653f808b61 [2020-11-29 19:25:31,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:25:31,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:25:31,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:31,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:25:31,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:25:31,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da2ee26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31, skipping insertion in model container [2020-11-29 19:25:31,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:31,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:25:31,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:25:31,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:31,874 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:25:31,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:25:31,969 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:25:31,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31 WrapperNode [2020-11-29 19:25:31,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:25:31,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:25:31,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:25:31,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:25:32,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:25:32,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:25:32,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:25:32,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:25:32,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... [2020-11-29 19:25:32,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:25:32,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:25:32,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:25:32,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:25:32,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:25:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-29 19:25:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:25:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:25:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 19:25:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:25:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:25:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:25:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 19:25:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:25:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:25:41,731 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:25:41,738 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 19:25:41,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:41 BoogieIcfgContainer [2020-11-29 19:25:41,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:25:41,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:25:41,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:25:41,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:25:41,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:25:31" (1/3) ... [2020-11-29 19:25:41,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cc5bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:41, skipping insertion in model container [2020-11-29 19:25:41,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:25:31" (2/3) ... [2020-11-29 19:25:41,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cc5bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:25:41, skipping insertion in model container [2020-11-29 19:25:41,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:41" (3/3) ... [2020-11-29 19:25:41,754 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0620b.c [2020-11-29 19:25:41,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:25:41,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:25:41,789 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:25:41,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:25:41,837 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:25:41,837 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:25:41,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:25:41,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:25:41,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:25:41,838 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:25:41,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:25:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 19:25:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:25:41,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:41,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:41,865 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:41,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:41,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1030429181, now seen corresponding path program 1 times [2020-11-29 19:25:41,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:41,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864462424] [2020-11-29 19:25:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:25:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:43,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:25:43,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:43,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:25:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:43,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864462424] [2020-11-29 19:25:43,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:43,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:25:43,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470297547] [2020-11-29 19:25:43,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:25:43,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:25:43,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:25:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:25:43,508 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-11-29 19:25:43,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:43,533 INFO L93 Difference]: Finished difference Result 73 states and 113 transitions. [2020-11-29 19:25:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:25:43,535 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:25:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:43,551 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:25:43,552 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 19:25:43,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:25:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 19:25:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 19:25:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 19:25:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-11-29 19:25:43,616 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 10 [2020-11-29 19:25:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:43,617 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-11-29 19:25:43,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:25:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-11-29 19:25:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:25:43,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:43,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:43,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:25:43,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1304878016, now seen corresponding path program 1 times [2020-11-29 19:25:43,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:43,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610401945] [2020-11-29 19:25:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:25:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:45,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:25:45,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:45,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:25:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:45,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610401945] [2020-11-29 19:25:45,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:45,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 19:25:45,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423575666] [2020-11-29 19:25:45,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:25:45,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:25:45,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:25:45,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:25:45,560 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 8 states. [2020-11-29 19:25:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:50,303 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-11-29 19:25:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:25:50,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-29 19:25:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:50,307 INFO L225 Difference]: With dead ends: 57 [2020-11-29 19:25:50,308 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 19:25:50,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:25:50,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 19:25:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-11-29 19:25:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 19:25:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 19:25:50,320 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 11 [2020-11-29 19:25:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:50,321 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 19:25:50,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:25:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-29 19:25:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:25:50,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:50,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:50,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:25:50,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash -413875709, now seen corresponding path program 1 times [2020-11-29 19:25:50,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:50,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040583044] [2020-11-29 19:25:50,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:25:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:25:51,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:25:51,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:25:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:51,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:25:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:25:51,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040583044] [2020-11-29 19:25:51,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:25:51,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-29 19:25:51,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181385981] [2020-11-29 19:25:51,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:25:51,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:25:51,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:25:51,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:25:51,975 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-11-29 19:25:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:25:58,464 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-11-29 19:25:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:25:58,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-29 19:25:58,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:25:58,468 INFO L225 Difference]: With dead ends: 35 [2020-11-29 19:25:58,468 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 19:25:58,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:25:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 19:25:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-11-29 19:25:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 19:25:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-29 19:25:58,479 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-11-29 19:25:58,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:25:58,479 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-29 19:25:58,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:25:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-29 19:25:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:25:58,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:25:58,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:25:58,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:25:58,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:25:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:25:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1848532469, now seen corresponding path program 1 times [2020-11-29 19:25:58,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:25:58,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315427189] [2020-11-29 19:25:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:26:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:26:01,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:26:01,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:26:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:26:01,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:26:01,670 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-29 19:26:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:26:01,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315427189] [2020-11-29 19:26:01,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:26:01,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 19:26:01,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186339503] [2020-11-29 19:26:01,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:26:01,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:26:01,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:26:01,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:26:01,831 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-11-29 19:26:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:26:02,077 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-29 19:26:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:26:02,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 19:26:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:26:02,085 INFO L225 Difference]: With dead ends: 32 [2020-11-29 19:26:02,085 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 19:26:02,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:26:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 19:26:02,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 19:26:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 19:26:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-29 19:26:02,090 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-29 19:26:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:26:02,090 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-29 19:26:02,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:26:02,091 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-29 19:26:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:26:02,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:26:02,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:26:02,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 19:26:02,298 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:26:02,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:26:02,298 INFO L82 PathProgramCache]: Analyzing trace with hash 712330328, now seen corresponding path program 1 times [2020-11-29 19:26:02,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:26:02,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255190054] [2020-11-29 19:26:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/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 [2020-11-29 19:26:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:26:03,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:26:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:26:03,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:26:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:26:03,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:26:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:26:03,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255190054] [2020-11-29 19:26:03,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:26:03,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2020-11-29 19:26:03,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839696613] [2020-11-29 19:26:03,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:26:03,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:26:03,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:26:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:26:03,890 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 14 states. [2020-11-29 19:26:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:26:04,230 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2020-11-29 19:26:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:26:04,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-29 19:26:04,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:26:04,232 INFO L225 Difference]: With dead ends: 18 [2020-11-29 19:26:04,233 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 19:26:04,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:26:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 19:26:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 19:26:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 19:26:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:26:04,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 19:26:04,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:26:04,235 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:26:04,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:26:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:26:04,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 19:26:04,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 19:26:04,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 19:26:04,772 INFO L274 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-11-29 19:26:04,772 INFO L274 CegarLoopResult]: For program point L143-2(lines 143 146) no Hoare annotation was computed. [2020-11-29 19:26:04,773 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 19:26:04,773 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 19:26:04,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 19:26:04,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 19:26:04,773 INFO L270 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: false [2020-11-29 19:26:04,773 INFO L274 CegarLoopResult]: For program point L111(lines 111 116) no Hoare annotation was computed. [2020-11-29 19:26:04,774 INFO L270 CegarLoopResult]: At program point L128(lines 119 129) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))) |ULTIMATE.start_main_#t~short36|)) [2020-11-29 19:26:04,775 INFO L274 CegarLoopResult]: For program point L122-1(lines 122 126) no Hoare annotation was computed. [2020-11-29 19:26:04,775 INFO L270 CegarLoopResult]: At program point L122-2(lines 122 126) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= .cse0 ULTIMATE.start___signbit_float_~x) (= .cse0 ULTIMATE.start_main_~res~0) |ULTIMATE.start_main_#t~short36|)) [2020-11-29 19:26:04,776 INFO L274 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-11-29 19:26:04,776 INFO L274 CegarLoopResult]: For program point L122-3(lines 122 126) no Hoare annotation was computed. [2020-11-29 19:26:04,776 INFO L274 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-11-29 19:26:04,777 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-11-29 19:26:04,777 INFO L274 CegarLoopResult]: For program point L81(lines 81 97) no Hoare annotation was computed. [2020-11-29 19:26:04,777 INFO L274 CegarLoopResult]: For program point L73(lines 73 98) no Hoare annotation was computed. [2020-11-29 19:26:04,777 INFO L274 CegarLoopResult]: For program point L65(lines 65 72) no Hoare annotation was computed. [2020-11-29 19:26:04,777 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 19:26:04,778 INFO L274 CegarLoopResult]: For program point L90(lines 90 96) no Hoare annotation was computed. [2020-11-29 19:26:04,778 INFO L274 CegarLoopResult]: For program point L90-2(lines 73 98) no Hoare annotation was computed. [2020-11-29 19:26:04,778 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 19:26:04,778 INFO L277 CegarLoopResult]: At program point L148(lines 131 149) the Hoare annotation is: true [2020-11-29 19:26:04,778 INFO L274 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-11-29 19:26:04,778 INFO L274 CegarLoopResult]: For program point L82(lines 82 88) no Hoare annotation was computed. [2020-11-29 19:26:04,779 INFO L274 CegarLoopResult]: For program point L115-2(line 115) no Hoare annotation was computed. [2020-11-29 19:26:04,779 INFO L270 CegarLoopResult]: At program point L115-3(lines 55 117) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_atan_float_~x .cse0) (= |ULTIMATE.start_atan_float_#res| .cse0) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))))) [2020-11-29 19:26:04,779 INFO L274 CegarLoopResult]: For program point L74(lines 74 77) no Hoare annotation was computed. [2020-11-29 19:26:04,779 INFO L274 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2020-11-29 19:26:04,779 INFO L274 CegarLoopResult]: For program point L66(lines 66 67) no Hoare annotation was computed. [2020-11-29 19:26:04,780 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 19:26:04,780 INFO L274 CegarLoopResult]: For program point L75(lines 75 76) no Hoare annotation was computed. [2020-11-29 19:26:04,780 INFO L274 CegarLoopResult]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2020-11-29 19:26:04,780 INFO L270 CegarLoopResult]: At program point L59-2(lines 59 63) the Hoare annotation is: (and (= ULTIMATE.start_atan_float_~x (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)) ~one_atan~0) (= ~huge_atan~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0)))) [2020-11-29 19:26:04,780 INFO L274 CegarLoopResult]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2020-11-29 19:26:04,780 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-29 19:26:04,781 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: false [2020-11-29 19:26:04,781 INFO L274 CegarLoopResult]: For program point L68(lines 68 71) no Hoare annotation was computed. [2020-11-29 19:26:04,800 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,803 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,810 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,810 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,811 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,811 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,811 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,811 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,813 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,816 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,818 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,818 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,818 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,819 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,819 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,821 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,822 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,822 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,822 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,822 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,823 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,824 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,834 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,834 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,837 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,847 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,847 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,848 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,848 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,848 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,849 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:04,849 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,849 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,849 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,850 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,850 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:04,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:26:04 BoogieIcfgContainer [2020-11-29 19:26:04,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:26:04,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:26:04,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:26:04,857 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:26:04,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:25:41" (3/4) ... [2020-11-29 19:26:04,861 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 19:26:04,880 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 19:26:04,881 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 19:26:04,881 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:26:04,882 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 19:26:04,918 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) [2020-11-29 19:26:04,921 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-11-29 19:26:04,923 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux [2020-11-29 19:26:05,001 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b9169396-5116-46ab-803d-5f1dbe734ea7/bin/uautomizer/witness.graphml [2020-11-29 19:26:05,002 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:26:05,004 INFO L168 Benchmark]: Toolchain (without parser) took 33417.24 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.6 MB in the beginning and 23.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,009 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:26:05,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.47 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 18.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.20 ms. Allocated memory is still 54.5 MB. Free memory was 18.8 MB in the beginning and 35.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,011 INFO L168 Benchmark]: Boogie Preprocessor took 98.08 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 33.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,011 INFO L168 Benchmark]: RCFGBuilder took 9535.43 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 74.9 kB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,012 INFO L168 Benchmark]: TraceAbstraction took 23108.34 ms. Allocated memory is still 67.1 MB. Free memory was 33.1 MB in the beginning and 29.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,013 INFO L168 Benchmark]: Witness Printer took 148.94 ms. Allocated memory is still 67.1 MB. Free memory was 29.2 MB in the beginning and 23.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:26:05,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 36.0 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.47 ms. Allocated memory is still 54.5 MB. Free memory was 32.4 MB in the beginning and 18.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 134.20 ms. Allocated memory is still 54.5 MB. Free memory was 18.8 MB in the beginning and 35.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.08 ms. Allocated memory is still 54.5 MB. Free memory was 35.7 MB in the beginning and 33.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9535.43 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 33.4 MB in the end (delta: 74.9 kB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23108.34 ms. Allocated memory is still 67.1 MB. Free memory was 33.1 MB in the beginning and 29.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Witness Printer took 148.94 ms. Allocated memory is still 67.1 MB. Free memory was 29.2 MB in the beginning and 23.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 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 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 - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-11-29 19:26:05,032 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,034 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,036 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 119]: Loop Invariant [2020-11-29 19:26:05,036 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,037 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,037 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,037 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,038 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,038 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,044 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,044 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,044 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,045 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,045 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,045 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967295bv32) == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 122]: Loop Invariant [2020-11-29 19:26:05,046 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,047 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,047 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,048 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,048 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,048 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,049 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,052 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,053 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,054 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,054 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,054 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((((((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && aux-res == -0.0f && __signbit_float(res) == 1-aux - InvariantResult [Line: 59]: Loop Invariant [2020-11-29 19:26:05,055 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,055 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,055 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,056 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,056 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,056 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,057 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 19:26:05,057 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,057 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,057 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,058 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 19:26:05,058 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) == one_atan) && huge_atan == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30)) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 183 SDslu, 183 SDs, 0 SdLazy, 80 SolverSat, 13 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 136 HoareAnnotationTreeSize, 7 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 12 QuantifiedInterpolants, 9709 SizeOfPredicates, 28 NumberOfNonLiveVariables, 523 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! Received shutdown request...