./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 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_1052c.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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ....................................................................................................................................................................................................................................................................................................... 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_1052c.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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-096883e [2020-12-01 23:20:18,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:18,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:18,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:18,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:18,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:18,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:18,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:18,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:18,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:18,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:18,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:18,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:18,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:18,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:18,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:18,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:18,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:18,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:18,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:18,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:18,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:18,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:18,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:18,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:18,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:18,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:18,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:18,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:18,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:18,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:18,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:18,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:18,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:18,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:18,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:18,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:18,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:18,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:18,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:18,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:18,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:20:18,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:18,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:18,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:18,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:18,589 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:18,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:18,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:18,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:20:18,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:18,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:18,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:18,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:18,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:18,591 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:18,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:18,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:18,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:18,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:18,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:18,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:18,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:18,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:18,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:18,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:18,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:18,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:20:18,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:20:18,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:18,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:18,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-12-01 23:20:19,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:19,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:19,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:19,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:19,049 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:19,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-12-01 23:20:19,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/590cf55b6/d27b5ff183d946178d397bd3d18e4bb0/FLAG7ee32d92b [2020-12-01 23:20:19,824 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:19,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-12-01 23:20:19,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/590cf55b6/d27b5ff183d946178d397bd3d18e4bb0/FLAG7ee32d92b [2020-12-01 23:20:20,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/590cf55b6/d27b5ff183d946178d397bd3d18e4bb0 [2020-12-01 23:20:20,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:20,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:20,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:20,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:20,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:20,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68937e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20, skipping insertion in model container [2020-12-01 23:20:20,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:20,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:20,429 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c[2271,2284] [2020-12-01 23:20:20,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:20,447 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:20,481 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c[2271,2284] [2020-12-01 23:20:20,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:20,502 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:20,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20 WrapperNode [2020-12-01 23:20:20,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:20,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:20,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:20,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:20,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:20,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:20,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:20,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:20,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (1/1) ... [2020-12-01 23:20:20,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:20,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:20,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:20,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:20,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (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 [2020-12-01 23:20:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:20,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:21,193 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:21,196 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 23:20:21,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:21 BoogieIcfgContainer [2020-12-01 23:20:21,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:21,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:21,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:21,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:21,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:20" (1/3) ... [2020-12-01 23:20:21,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774eeda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:21, skipping insertion in model container [2020-12-01 23:20:21,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:20" (2/3) ... [2020-12-01 23:20:21,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774eeda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:21, skipping insertion in model container [2020-12-01 23:20:21,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:21" (3/3) ... [2020-12-01 23:20:21,228 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-12-01 23:20:21,258 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:21,263 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:21,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:21,327 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:21,327 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:21,329 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:21,329 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:21,329 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:21,329 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:21,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:21,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-01 23:20:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:21,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:21,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:21,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-12-01 23:20:21,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:21,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728074208] [2020-12-01 23:20:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:21,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728074208] [2020-12-01 23:20:21,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:21,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:21,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854630824] [2020-12-01 23:20:21,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:21,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:21,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:21,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:21,657 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-12-01 23:20:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:21,676 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2020-12-01 23:20:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:21,678 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 23:20:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:21,689 INFO L225 Difference]: With dead ends: 74 [2020-12-01 23:20:21,690 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 23:20:21,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 23:20:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-01 23:20:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 23:20:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-01 23:20:21,738 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-12-01 23:20:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:21,738 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-01 23:20:21,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-01 23:20:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:20:21,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:21,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:21,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:21,741 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:21,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-12-01 23:20:21,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:21,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074130792] [2020-12-01 23:20:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:21,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:21,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:21,852 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:21,852 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:21,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:21,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:21 BoogieIcfgContainer [2020-12-01 23:20:21,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:21,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:21,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:21,890 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:21,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:21" (3/4) ... [2020-12-01 23:20:21,895 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:21,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:21,898 INFO L168 Benchmark]: Toolchain (without parser) took 1731.05 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.7 MB in the beginning and 28.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:21,899 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:21,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.79 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 19.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:21,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.75 ms. Allocated memory is still 44.0 MB. Free memory was 29.4 MB in the beginning and 27.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:21,902 INFO L168 Benchmark]: Boogie Preprocessor took 41.61 ms. Allocated memory is still 44.0 MB. Free memory was 27.6 MB in the beginning and 26.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:21,903 INFO L168 Benchmark]: RCFGBuilder took 597.14 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 24.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:21,904 INFO L168 Benchmark]: TraceAbstraction took 678.10 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 29.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:21,905 INFO L168 Benchmark]: Witness Printer took 5.59 ms. Allocated memory is still 54.5 MB. Free memory was 29.0 MB in the beginning and 28.4 MB in the end (delta: 536.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:21,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 35.7 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.79 ms. Allocated memory is still 44.0 MB. Free memory was 21.4 MB in the beginning and 19.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.75 ms. Allocated memory is still 44.0 MB. Free memory was 29.4 MB in the beginning and 27.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.61 ms. Allocated memory is still 44.0 MB. Free memory was 27.6 MB in the beginning and 26.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.14 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 24.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 678.10 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 29.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.59 ms. Allocated memory is still 54.5 MB. Free memory was 29.0 MB in the beginning and 28.4 MB in the end (delta: 536.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 0.2.0-096883e [2020-12-01 23:20:24,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:24,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:24,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:24,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:24,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:24,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:24,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:24,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:24,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:24,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:24,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:24,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:24,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:24,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:24,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:24,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:24,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:24,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:24,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:24,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:24,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:24,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:24,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:24,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:24,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:24,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:24,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:24,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:24,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:24,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:24,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:24,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:24,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:24,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:24,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:24,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:24,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:24,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:24,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:24,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:24,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:24,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:24,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:24,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:24,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:24,719 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:24,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:24,720 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:24,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:24,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:24,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:24,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:24,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:24,722 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:24,722 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:24,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:24,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:24,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:24,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:24,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:24,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:24,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:24,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:24,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:24,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:24,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:24,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:24,725 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:24,725 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:24,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:24,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:24,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:24,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-12-01 23:20:25,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:25,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:25,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:25,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:25,169 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:25,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-12-01 23:20:25,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f216ddb10/b69827300d7c48e096a5a7db2fe9fda5/FLAGa90076437 [2020-12-01 23:20:25,814 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:25,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-12-01 23:20:25,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f216ddb10/b69827300d7c48e096a5a7db2fe9fda5/FLAGa90076437 [2020-12-01 23:20:26,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f216ddb10/b69827300d7c48e096a5a7db2fe9fda5 [2020-12-01 23:20:26,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:26,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:26,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:26,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:26,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:26,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f10a8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26, skipping insertion in model container [2020-12-01 23:20:26,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:26,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:26,622 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c[2271,2284] [2020-12-01 23:20:26,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:26,668 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:26,740 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c[2271,2284] [2020-12-01 23:20:26,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:26,773 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:26,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26 WrapperNode [2020-12-01 23:20:26,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:26,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:26,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:26,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:26,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:26,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:26,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:26,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:26,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (1/1) ... [2020-12-01 23:20:26,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:26,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:26,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:26,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:26,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (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 [2020-12-01 23:20:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:20:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:20:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:20:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:20:27,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:20:27,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:29,469 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:29,470 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 23:20:29,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:29 BoogieIcfgContainer [2020-12-01 23:20:29,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:29,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:29,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:29,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:29,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:26" (1/3) ... [2020-12-01 23:20:29,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0d5437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:29, skipping insertion in model container [2020-12-01 23:20:29,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:26" (2/3) ... [2020-12-01 23:20:29,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0d5437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:29, skipping insertion in model container [2020-12-01 23:20:29,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:29" (3/3) ... [2020-12-01 23:20:29,485 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-12-01 23:20:29,500 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:29,504 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:29,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:29,543 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:29,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:29,544 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:29,544 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:29,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:29,544 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:29,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:29,545 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-01 23:20:29,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:29,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:29,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:29,566 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-12-01 23:20:29,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:29,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413531501] [2020-12-01 23:20:29,587 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 [2020-12-01 23:20:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:20:29,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:29,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:29,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413531501] [2020-12-01 23:20:29,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:29,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:20:29,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353267674] [2020-12-01 23:20:29,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:29,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:29,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:29,785 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-12-01 23:20:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:29,807 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2020-12-01 23:20:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:29,808 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 23:20:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:29,819 INFO L225 Difference]: With dead ends: 74 [2020-12-01 23:20:29,819 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 23:20:29,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 23:20:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-01 23:20:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 23:20:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-01 23:20:29,866 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-12-01 23:20:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:29,866 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-01 23:20:29,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-01 23:20:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:20:29,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:29,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:30,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:20:30,085 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-12-01 23:20:30,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:30,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724455564] [2020-12-01 23:20:30,088 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 [2020-12-01 23:20:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:30,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 23:20:30,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:30,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:30,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724455564] [2020-12-01 23:20:30,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:30,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-12-01 23:20:30,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182520868] [2020-12-01 23:20:30,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:20:30,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:30,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:20:30,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:20:30,494 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2020-12-01 23:20:31,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:31,716 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-12-01 23:20:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:20:31,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-01 23:20:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:31,718 INFO L225 Difference]: With dead ends: 59 [2020-12-01 23:20:31,718 INFO L226 Difference]: Without dead ends: 34 [2020-12-01 23:20:31,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-01 23:20:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-01 23:20:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-12-01 23:20:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 23:20:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-01 23:20:31,727 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-12-01 23:20:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:31,727 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-01 23:20:31,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:20:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-01 23:20:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 23:20:31,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:31,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:31,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:20:31,950 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:31,952 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2020-12-01 23:20:31,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:31,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898380897] [2020-12-01 23:20:31,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 23:20:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:32,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 23:20:32,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:32,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:33,818 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-12-01 23:20:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:34,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898380897] [2020-12-01 23:20:34,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:34,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-01 23:20:34,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76779934] [2020-12-01 23:20:34,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:20:34,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:34,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:20:34,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:20:34,521 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-12-01 23:20:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:35,523 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-01 23:20:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 23:20:35,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 23:20:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:35,533 INFO L225 Difference]: With dead ends: 34 [2020-12-01 23:20:35,533 INFO L226 Difference]: Without dead ends: 22 [2020-12-01 23:20:35,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:20:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-01 23:20:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-01 23:20:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 23:20:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-01 23:20:35,544 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-12-01 23:20:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:35,546 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-01 23:20:35,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:20:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-01 23:20:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 23:20:35,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:35,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:35,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:20:35,763 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:35,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2020-12-01 23:20:35,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:35,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596123464] [2020-12-01 23:20:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 23:20:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:36,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:36,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:36,259 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:20:36,259 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:36,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 23:20:36,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:36 BoogieIcfgContainer [2020-12-01 23:20:36,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:36,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:36,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:36,514 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:36,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:29" (3/4) ... [2020-12-01 23:20:36,517 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:20:36,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:20:36,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:36,579 INFO L168 Benchmark]: Toolchain (without parser) took 10351.95 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 32.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,580 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 46.1 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:36,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.04 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 23.2 MB in the end (delta: 347.0 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.75 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 21.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,583 INFO L168 Benchmark]: Boogie Preprocessor took 68.42 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 41.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,583 INFO L168 Benchmark]: RCFGBuilder took 2533.12 ms. Allocated memory is still 56.6 MB. Free memory was 41.1 MB in the beginning and 31.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,584 INFO L168 Benchmark]: TraceAbstraction took 7039.07 ms. Allocated memory is still 56.6 MB. Free memory was 31.2 MB in the beginning and 35.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,585 INFO L168 Benchmark]: Witness Printer took 64.87 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 32.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 46.1 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 545.04 ms. Allocated memory is still 46.1 MB. Free memory was 23.6 MB in the beginning and 23.2 MB in the end (delta: 347.0 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.75 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 21.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.42 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 41.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2533.12 ms. Allocated memory is still 56.6 MB. Free memory was 41.1 MB in the beginning and 31.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7039.07 ms. Allocated memory is still 56.6 MB. Free memory was 31.2 MB in the beginning and 35.9 MB in the end (delta: -4.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Witness Printer took 64.87 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 32.6 MB in the end (delta: 3.3 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: 105]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND TRUE j0 < 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L30] COND TRUE huge_floor + x > 0.0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND FALSE !(i0 >= 0) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L33] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L34] i0 = 0xbff00000 [L35] i1 = 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L73] ieee_double_shape_type iw_u; [L74] iw_u.parts.msw = (i0) [L75] iw_u.parts.lsw = (i1) [L76] EXPR iw_u.value [L76] (x) = iw_u.value [L78] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 123 SDslu, 47 SDs, 0 SdLazy, 27 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 3734 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...