./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.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_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d ...................................................................................................................................................................................................................................................................................................................... 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_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/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 4975ced40ee4a8ea85abb8c123fa258e6c012e9d .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:12:26,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:12:26,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:12:26,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:12:26,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:12:26,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:12:26,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:12:26,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:12:26,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:12:26,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:12:26,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:12:26,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:12:26,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:12:26,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:12:26,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:12:26,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:12:26,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:12:26,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:12:26,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:12:26,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:12:26,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:12:26,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:12:26,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:12:26,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:12:26,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:12:26,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:12:26,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:12:26,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:12:26,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:12:26,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:12:26,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:12:26,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:12:26,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:12:26,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:12:26,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:12:26,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:12:26,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:12:26,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:12:26,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:12:26,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:12:26,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:12:26,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:12:26,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:12:26,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:12:26,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:12:26,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:12:26,346 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:12:26,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:12:26,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:12:26,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:12:26,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:12:26,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:12:26,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:12:26,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:12:26,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:12:26,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:12:26,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:12:26,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:12:26,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:12:26,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:12:26,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:12:26,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:12:26,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:12:26,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:12:26,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:12:26,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:12:26,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:12:26,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:12:26,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:12:26,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:12:26,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:12:26,352 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_40964dd9-33ad-46cb-a37d-36c2b1980f86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-11-28 03:12:26,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:12:26,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:12:26,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:12:26,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:12:26,628 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:12:26,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-28 03:12:26,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/d14c77c8d/5897e71a8097469e8d6c055095ef3ad5/FLAGf66b045cd [2020-11-28 03:12:27,138 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:12:27,138 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-28 03:12:27,146 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/d14c77c8d/5897e71a8097469e8d6c055095ef3ad5/FLAGf66b045cd [2020-11-28 03:12:27,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/d14c77c8d/5897e71a8097469e8d6c055095ef3ad5 [2020-11-28 03:12:27,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:12:27,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:12:27,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:27,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:12:27,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:12:27,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:27,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6408a519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27, skipping insertion in model container [2020-11-28 03:12:27,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:27,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:12:27,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:12:27,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:27,872 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:12:27,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:27,984 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:12:27,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27 WrapperNode [2020-11-28 03:12:27,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:27,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:27,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:12:27,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:12:27,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:28,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:12:28,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:12:28,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:12:28,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... [2020-11-28 03:12:28,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:12:28,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:12:28,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:12:28,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:12:28,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/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 [2020-11-28 03:12:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:12:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:12:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:12:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:12:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:12:28,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:12:28,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:12:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:12:28,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 03:12:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:12:28,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:12:28,842 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 03:12:28,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:28 BoogieIcfgContainer [2020-11-28 03:12:28,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:12:28,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:12:28,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:12:28,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:12:28,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:27" (1/3) ... [2020-11-28 03:12:28,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d761e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:28, skipping insertion in model container [2020-11-28 03:12:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:27" (2/3) ... [2020-11-28 03:12:28,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d761e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:28, skipping insertion in model container [2020-11-28 03:12:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:28" (3/3) ... [2020-11-28 03:12:28,853 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-11-28 03:12:28,863 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:12:28,868 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:12:28,886 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:12:28,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:12:28,910 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:12:28,910 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:12:28,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:12:28,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:12:28,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:12:28,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:12:28,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:12:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-28 03:12:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:12:28,929 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:28,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:28,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:28,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-28 03:12:28,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:28,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527370362] [2020-11-28 03:12:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:29,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527370362] [2020-11-28 03:12:29,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:29,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:12:29,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858582927] [2020-11-28 03:12:29,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:12:29,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:29,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:12:29,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:12:29,137 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-28 03:12:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:29,170 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-28 03:12:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:12:29,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:12:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:29,186 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:12:29,186 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:12:29,192 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 [2020-11-28 03:12:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:12:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 03:12:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:12:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-28 03:12:29,237 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-28 03:12:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:29,238 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-28 03:12:29,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:12:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-28 03:12:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:12:29,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:29,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:29,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:12:29,240 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:29,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-28 03:12:29,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:29,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110279485] [2020-11-28 03:12:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:29,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:29,489 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:29,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:12:29,517 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:12:29,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:12:29,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:12:29 BoogieIcfgContainer [2020-11-28 03:12:29,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:12:29,569 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:12:29,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:12:29,570 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:12:29,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:28" (3/4) ... [2020-11-28 03:12:29,576 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:12:29,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:12:29,579 INFO L168 Benchmark]: Toolchain (without parser) took 2054.43 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 49.9 MB in the beginning and 51.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:29,580 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 59.3 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:29,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.28 ms. Allocated memory is still 83.9 MB. Free memory was 49.7 MB in the beginning and 57.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:29,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.72 ms. Allocated memory is still 83.9 MB. Free memory was 57.0 MB in the beginning and 54.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:29,582 INFO L168 Benchmark]: Boogie Preprocessor took 62.06 ms. Allocated memory is still 83.9 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:29,584 INFO L168 Benchmark]: RCFGBuilder took 739.14 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 52.0 MB in the beginning and 82.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:29,585 INFO L168 Benchmark]: TraceAbstraction took 722.91 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 51.9 MB in the end (delta: 30.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:29,586 INFO L168 Benchmark]: Witness Printer took 6.54 ms. Allocated memory is still 111.1 MB. Free memory is still 51.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:29,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 59.3 MB in the beginning and 59.3 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.28 ms. Allocated memory is still 83.9 MB. Free memory was 49.7 MB in the beginning and 57.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.72 ms. Allocated memory is still 83.9 MB. Free memory was 57.0 MB in the beginning and 54.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.06 ms. Allocated memory is still 83.9 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 739.14 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 52.0 MB in the beginning and 82.1 MB in the end (delta: -30.0 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 722.91 ms. Allocated memory is still 111.1 MB. Free memory was 82.1 MB in the beginning and 51.9 MB in the end (delta: 30.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.54 ms. Allocated memory is still 111.1 MB. Free memory is still 51.9 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 bitwiseOr at line 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 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: 87 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=61occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 [2020-11-28 03:12:32,072 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 03:12:32,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:12:32,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:12:32,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:12:32,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:12:32,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:12:32,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:12:32,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:12:32,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:12:32,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:12:32,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:12:32,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:12:32,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:12:32,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:12:32,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:12:32,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:12:32,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:12:32,223 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:12:32,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:12:32,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:12:32,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:12:32,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:12:32,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:12:32,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:12:32,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:12:32,225 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:12:32,225 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:12:32,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:12:32,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:12:32,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:12:32,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:12:32,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:12:32,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:12:32,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:12:32,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:12:32,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:12:32,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:12:32,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:12:32,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:12:32,228 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:12:32,228 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:12:32,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:12:32,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:12:32,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:12:32,229 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_40964dd9-33ad-46cb-a37d-36c2b1980f86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4975ced40ee4a8ea85abb8c123fa258e6c012e9d [2020-11-28 03:12:32,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:12:32,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:12:32,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:12:32,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:12:32,677 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:12:32,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-28 03:12:32,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/811f3f1b2/6225f47699214d00bd28d40a6055f224/FLAG7fe45cfbe [2020-11-28 03:12:33,289 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:12:33,290 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-11-28 03:12:33,299 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/811f3f1b2/6225f47699214d00bd28d40a6055f224/FLAG7fe45cfbe [2020-11-28 03:12:33,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/data/811f3f1b2/6225f47699214d00bd28d40a6055f224 [2020-11-28 03:12:33,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:12:33,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:12:33,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:33,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:12:33,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:12:33,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:33" (1/1) ... [2020-11-28 03:12:33,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a046391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:33, skipping insertion in model container [2020-11-28 03:12:33,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:33" (1/1) ... [2020-11-28 03:12:33,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:12:33,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:12:33,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:33,970 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:12:34,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:34,072 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:12:34,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34 WrapperNode [2020-11-28 03:12:34,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:34,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:34,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:12:34,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:12:34,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:34,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:12:34,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:12:34,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:12:34,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... [2020-11-28 03:12:34,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:12:34,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:12:34,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:12:34,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:12:34,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/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 [2020-11-28 03:12:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:12:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:12:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:12:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:12:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-28 03:12:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:12:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:12:34,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:12:34,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:12:34,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:12:38,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:12:38,263 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 03:12:38,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:38 BoogieIcfgContainer [2020-11-28 03:12:38,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:12:38,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:12:38,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:12:38,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:12:38,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:33" (1/3) ... [2020-11-28 03:12:38,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76edbe85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:38, skipping insertion in model container [2020-11-28 03:12:38,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:34" (2/3) ... [2020-11-28 03:12:38,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76edbe85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:38, skipping insertion in model container [2020-11-28 03:12:38,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:38" (3/3) ... [2020-11-28 03:12:38,272 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-11-28 03:12:38,282 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:12:38,286 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:12:38,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:12:38,323 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:12:38,323 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:12:38,323 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:12:38,323 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:12:38,324 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:12:38,324 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:12:38,324 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:12:38,324 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:12:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-28 03:12:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:12:38,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:38,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:38,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:38,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-28 03:12:38,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:12:38,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994645899] [2020-11-28 03:12:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/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 [2020-11-28 03:12:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:39,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:12:39,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:39,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:12:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:39,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994645899] [2020-11-28 03:12:39,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:39,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:12:39,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098998139] [2020-11-28 03:12:39,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:12:39,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:12:39,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:12:39,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:12:39,393 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-28 03:12:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:39,416 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-28 03:12:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:12:39,417 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:12:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:39,426 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:12:39,426 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:12:39,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:12:39,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:12:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 03:12:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 03:12:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-28 03:12:39,463 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-28 03:12:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:39,464 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-28 03:12:39,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:12:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-28 03:12:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:12:39,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:39,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:39,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:12:39,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:39,682 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-28 03:12:39,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:12:39,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796358848] [2020-11-28 03:12:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/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 [2020-11-28 03:12:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:41,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:42,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:42,811 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:12:42,811 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:12:43,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:12:43,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:12:43 BoogieIcfgContainer [2020-11-28 03:12:43,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:12:43,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:12:43,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:12:43,049 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:12:43,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:38" (3/4) ... [2020-11-28 03:12:43,051 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:12:43,101 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_40964dd9-33ad-46cb-a37d-36c2b1980f86/bin/uautomizer/witness.graphml [2020-11-28 03:12:43,101 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:12:43,103 INFO L168 Benchmark]: Toolchain (without parser) took 9483.50 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 43.8 MB in the beginning and 46.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:43,104 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:43,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.53 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 42.8 MB in the end (delta: 740.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:43,105 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.13 ms. Allocated memory is still 62.9 MB. Free memory was 42.6 MB in the beginning and 40.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:43,106 INFO L168 Benchmark]: Boogie Preprocessor took 47.95 ms. Allocated memory is still 62.9 MB. Free memory was 40.2 MB in the beginning and 38.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:43,107 INFO L168 Benchmark]: RCFGBuilder took 4048.29 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 39.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:43,107 INFO L168 Benchmark]: TraceAbstraction took 4781.84 ms. Allocated memory is still 79.7 MB. Free memory was 39.2 MB in the beginning and 49.0 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:43,108 INFO L168 Benchmark]: Witness Printer took 52.74 ms. Allocated memory is still 79.7 MB. Free memory was 49.0 MB in the beginning and 46.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:43,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 452.53 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 42.8 MB in the end (delta: 740.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.13 ms. Allocated memory is still 62.9 MB. Free memory was 42.6 MB in the beginning and 40.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.95 ms. Allocated memory is still 62.9 MB. Free memory was 40.2 MB in the beginning and 38.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4048.29 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 37.8 MB in the beginning and 39.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4781.84 ms. Allocated memory is still 79.7 MB. Free memory was 39.2 MB in the beginning and 49.0 MB in the end (delta: -9.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.74 ms. Allocated memory is still 79.7 MB. Free memory was 49.0 MB in the beginning and 46.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...