./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d ..................................................................................................................................................................................................................................................................................................................................... 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 [2020-10-24 23:14:21,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:14:21,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:14:21,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:14:21,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:14:21,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:14:21,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:14:21,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:14:21,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:14:21,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:14:21,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:14:21,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:14:21,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:14:21,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:14:21,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:14:21,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:14:21,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:14:21,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:14:21,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:14:21,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:14:21,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:14:21,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:14:21,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:14:21,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:14:21,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:14:21,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:14:21,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:14:21,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:14:21,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:14:21,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:14:21,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:14:21,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:14:21,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:14:21,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:14:21,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:14:21,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:14:21,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:14:21,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:14:21,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:14:21,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:14:21,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:14:21,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:14:21,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:14:21,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:14:21,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:14:21,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:14:21,450 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:14:21,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:14:21,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:14:21,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:14:21,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:14:21,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:14:21,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:14:21,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:14:21,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:14:21,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:14:21,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:14:21,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:14:21,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:14:21,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:14:21,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:14:21,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:14:21,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:14:21,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:14:21,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:14:21,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:14:21,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:14:21,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:14:21,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:14:21,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:14:21,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:14:21,459 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d [2020-10-24 23:14:21,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:14:21,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:14:21,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:14:21,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:14:21,954 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:14:21,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-10-24 23:14:22,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9189d4f2/93849a04f1244713b9df8af8e42664f7/FLAG36de0e9dd [2020-10-24 23:14:22,673 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:14:22,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-10-24 23:14:22,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9189d4f2/93849a04f1244713b9df8af8e42664f7/FLAG36de0e9dd [2020-10-24 23:14:23,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9189d4f2/93849a04f1244713b9df8af8e42664f7 [2020-10-24 23:14:23,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:14:23,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:14:23,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:23,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:14:23,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:14:23,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7256eb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23, skipping insertion in model container [2020-10-24 23:14:23,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:14:23,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:14:23,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:23,331 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:14:23,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:23,404 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:14:23,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23 WrapperNode [2020-10-24 23:14:23,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:23,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:23,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:14:23,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:14:23,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:23,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:14:23,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:14:23,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:14:23,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... [2020-10-24 23:14:23,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:14:23,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:14:23,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:14:23,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:14:23,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:14:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:14:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:14:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:14:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:14:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:14:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:14:23,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:14:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:14:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:14:24,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:14:24,305 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-24 23:14:24,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:24 BoogieIcfgContainer [2020-10-24 23:14:24,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:14:24,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:14:24,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:14:24,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:14:24,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:14:23" (1/3) ... [2020-10-24 23:14:24,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba2f13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:24, skipping insertion in model container [2020-10-24 23:14:24,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:23" (2/3) ... [2020-10-24 23:14:24,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba2f13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:24, skipping insertion in model container [2020-10-24 23:14:24,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:24" (3/3) ... [2020-10-24 23:14:24,324 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2020-10-24 23:14:24,337 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:14:24,343 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:14:24,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:14:24,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:14:24,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:14:24,387 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:14:24,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:14:24,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:14:24,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:14:24,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:14:24,387 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:14:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 23:14:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:14:24,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:14:24,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:14:24,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:14:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:14:24,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-10-24 23:14:24,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:14:24,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937056713] [2020-10-24 23:14:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:14:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:14:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:14:24,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937056713] [2020-10-24 23:14:24,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:14:24,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:14:24,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900003892] [2020-10-24 23:14:24,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:14:24,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:14:24,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:14:24,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:14:24,637 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 23:14:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:14:24,661 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-10-24 23:14:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:14:24,662 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 23:14:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:14:24,675 INFO L225 Difference]: With dead ends: 63 [2020-10-24 23:14:24,675 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 23:14:24,678 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 [2020-10-24 23:14:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 23:14:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 23:14:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 23:14:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-24 23:14:24,724 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-10-24 23:14:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:14:24,724 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-24 23:14:24,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:14:24,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-24 23:14:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:14:24,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:14:24,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:14:24,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:14:24,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:14:24,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:14:24,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-10-24 23:14:24,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:14:24,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172913459] [2020-10-24 23:14:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:14:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:14:24,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:14:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:14:25,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:14:25,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:14:25,078 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:14:25,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:14:25,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:14:25 BoogieIcfgContainer [2020-10-24 23:14:25,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:14:25,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:14:25,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:14:25,153 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:14:25,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:24" (3/4) ... [2020-10-24 23:14:25,158 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:14:25,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:14:25,161 INFO L168 Benchmark]: Toolchain (without parser) took 2132.17 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 17.4 MB in the beginning and 35.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:25,162 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 39.8 MB. Free memory is still 25.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:14:25,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.69 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 25.8 MB in the beginning and 32.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:25,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.95 ms. Allocated memory is still 48.2 MB. Free memory was 31.8 MB in the beginning and 29.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:25,165 INFO L168 Benchmark]: Boogie Preprocessor took 72.28 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:25,166 INFO L168 Benchmark]: RCFGBuilder took 740.66 ms. Allocated memory is still 48.2 MB. Free memory was 28.0 MB in the beginning and 30.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:25,167 INFO L168 Benchmark]: TraceAbstraction took 839.48 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 35.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:25,168 INFO L168 Benchmark]: Witness Printer took 5.75 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 35.3 MB in the end (delta: 317.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:14:25,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 39.8 MB. Free memory is still 25.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.69 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 25.8 MB in the beginning and 32.0 MB in the end (delta: -6.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.95 ms. Allocated memory is still 48.2 MB. Free memory was 31.8 MB in the beginning and 29.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.28 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 28.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 740.66 ms. Allocated memory is still 48.2 MB. Free memory was 28.0 MB in the beginning and 30.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 839.48 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 30.2 MB in the beginning and 35.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.75 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 35.3 MB in the end (delta: 317.7 kB). 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 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L134] double x = 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0910a.c", 3, "reach_error") VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 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: 42 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=33occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 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 [2020-10-24 23:14:27,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:14:27,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:14:27,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 23:14:28,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:14:28,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:14:28,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:14:28,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:14:28,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:14:28,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:14:28,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:14:28,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:14:28,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:14:28,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:14:28,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:14:28,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:14:28,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:14:28,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:14:28,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:14:28,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:14:28,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:14:28,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:14:28,094 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:14:28,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:14:28,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:14:28,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:14:28,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:14:28,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:14:28,097 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:14:28,097 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:14:28,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:14:28,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:14:28,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:14:28,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:14:28,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:14:28,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:14:28,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:14:28,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:14:28,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:14:28,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:14:28,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:14:28,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:14:28,100 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:14:28,100 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:14:28,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:14:28,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:14:28,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:14:28,101 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5b8c80e48870e4ca371ca121ab1eea2fc8dc5d [2020-10-24 23:14:28,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:14:28,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:14:28,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:14:28,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:14:28,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:14:28,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-10-24 23:14:28,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda77ae35/5bd60c9143244e8d8832ad45ce8aa4c7/FLAG098c264e8 [2020-10-24 23:14:29,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:14:29,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0910a.c [2020-10-24 23:14:29,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda77ae35/5bd60c9143244e8d8832ad45ce8aa4c7/FLAG098c264e8 [2020-10-24 23:14:29,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda77ae35/5bd60c9143244e8d8832ad45ce8aa4c7 [2020-10-24 23:14:29,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:14:29,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:14:29,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:29,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:14:29,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:14:29,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:29" (1/1) ... [2020-10-24 23:14:29,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb76890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:29, skipping insertion in model container [2020-10-24 23:14:29,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:29" (1/1) ... [2020-10-24 23:14:29,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:14:29,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:14:30,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:30,197 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:14:30,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:14:30,310 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:14:30,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30 WrapperNode [2020-10-24 23:14:30,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:14:30,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:30,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:14:30,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:14:30,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:14:30,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:14:30,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:14:30,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:14:30,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... [2020-10-24 23:14:30,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:14:30,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:14:30,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:14:30,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:14:30,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:14:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:14:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:14:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:14:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:14:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:14:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:14:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:14:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:14:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:14:54,516 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:14:54,517 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-24 23:14:54,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:54 BoogieIcfgContainer [2020-10-24 23:14:54,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:14:54,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:14:54,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:14:54,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:14:54,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:14:29" (1/3) ... [2020-10-24 23:14:54,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740aa7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:54, skipping insertion in model container [2020-10-24 23:14:54,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:30" (2/3) ... [2020-10-24 23:14:54,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740aa7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:54, skipping insertion in model container [2020-10-24 23:14:54,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:54" (3/3) ... [2020-10-24 23:14:54,530 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0910a.c [2020-10-24 23:14:54,544 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:14:54,550 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:14:54,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:14:54,596 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:14:54,597 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:14:54,597 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:14:54,597 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:14:54,598 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:14:54,598 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:14:54,598 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:14:54,598 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:14:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 23:14:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:14:54,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:14:54,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:14:54,623 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:14:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:14:54,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2110731690, now seen corresponding path program 1 times [2020-10-24 23:14:54,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:14:54,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889866495] [2020-10-24 23:14:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:14:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:14:55,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:14:55,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:14:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:14:55,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:14:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:14:55,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889866495] [2020-10-24 23:14:55,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:14:55,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:14:55,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060893321] [2020-10-24 23:14:55,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:14:55,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:14:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:14:55,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:14:55,761 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 23:14:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:14:55,784 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2020-10-24 23:14:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:14:55,786 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 23:14:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:14:55,797 INFO L225 Difference]: With dead ends: 63 [2020-10-24 23:14:55,798 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 23:14:55,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:14:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 23:14:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 23:14:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 23:14:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2020-10-24 23:14:55,845 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 12 [2020-10-24 23:14:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:14:55,846 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-10-24 23:14:55,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:14:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2020-10-24 23:14:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 23:14:55,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:14:55,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:14:56,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:14:56,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:14:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:14:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1825265086, now seen corresponding path program 1 times [2020-10-24 23:14:56,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:14:56,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109769825] [2020-10-24 23:14:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 23:14:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:14:57,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:14:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:14:58,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:14:58,555 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:14:58,556 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:14:58,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:14:58,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:14:58 BoogieIcfgContainer [2020-10-24 23:14:58,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:14:58,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:14:58,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:14:58,871 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:14:58,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:54" (3/4) ... [2020-10-24 23:14:58,874 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:14:58,985 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:14:58,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:14:58,988 INFO L168 Benchmark]: Toolchain (without parser) took 29202.66 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.9 MB in the beginning and 37.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,989 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 48.2 MB. Free memory was 28.0 MB in the beginning and 27.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:14:58,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.75 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 32.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.23 ms. Allocated memory is still 58.7 MB. Free memory was 32.8 MB in the beginning and 30.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,992 INFO L168 Benchmark]: Boogie Preprocessor took 65.24 ms. Allocated memory is still 58.7 MB. Free memory was 30.8 MB in the beginning and 28.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,993 INFO L168 Benchmark]: RCFGBuilder took 24025.91 ms. Allocated memory is still 58.7 MB. Free memory was 28.7 MB in the beginning and 33.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,994 INFO L168 Benchmark]: TraceAbstraction took 4348.83 ms. Allocated memory is still 58.7 MB. Free memory was 33.2 MB in the beginning and 21.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,994 INFO L168 Benchmark]: Witness Printer took 115.40 ms. Allocated memory is still 58.7 MB. Free memory was 21.5 MB in the beginning and 37.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:14:58,999 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 48.2 MB. Free memory was 28.0 MB in the beginning and 27.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 517.75 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 32.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.23 ms. Allocated memory is still 58.7 MB. Free memory was 32.8 MB in the beginning and 30.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.24 ms. Allocated memory is still 58.7 MB. Free memory was 30.8 MB in the beginning and 28.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 24025.91 ms. Allocated memory is still 58.7 MB. Free memory was 28.7 MB in the beginning and 33.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4348.83 ms. Allocated memory is still 58.7 MB. Free memory was 33.2 MB in the beginning and 21.5 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 115.40 ms. Allocated memory is still 58.7 MB. Free memory was 21.5 MB in the beginning and 37.3 MB in the end (delta: -15.9 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: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L134] double x = 0.0; [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L60] COND TRUE hx < 0x00100000 VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L135] double res = __ieee754_log(x); [L21] __int32_t hx, lx; VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (hx) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lx) = ew_u.parts.lsw [L28] hx &= 0x7fffffff [L29] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L30] hx = 0x7ff00000 - hx [L31] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] [L138] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_0910a.c", 3, "reach_error") VAL [Lg1_log=0.6666666666666735, Lg2_log=0.3999999999940942, Lg3_log=0.2857142874366239, Lg4_log=0.22222198432149784, Lg5_log=0.1818357216161805, Lg6_log=0.15313837699209373, Lg7_log=0.14798198605116586, ln2_hi_log=0.6931471803691238, ln2_lo_log=0.00000000019082149292705877, two54_log=18014398509481984, zero=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...