./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ...................................................................................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ......................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-0e1a00c [2020-11-29 14:21:41,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:21:41,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:21:41,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:21:41,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:21:41,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:21:41,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:21:41,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:21:41,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:21:41,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:21:41,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:21:41,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:21:41,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:21:41,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:21:41,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:21:41,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:21:41,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:21:41,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:21:41,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:21:41,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:21:41,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:21:41,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:21:41,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:21:41,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:21:41,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:21:41,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:21:41,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:21:41,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:21:41,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:21:41,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:21:41,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:21:41,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:21:41,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:21:41,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:21:41,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:21:41,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:21:41,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:21:41,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:21:41,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:21:41,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:21:41,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:21:41,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 14:21:41,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:21:41,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:21:41,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:21:41,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:21:41,364 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:21:41,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:21:41,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:21:41,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 14:21:41,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:21:41,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:21:41,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:21:41,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:21:41,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:21:41,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:21:41,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:21:41,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:21:41,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:21:41,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:21:41,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:21:41,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:21:41,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:21:41,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:21:41,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:21:41,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:21:41,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:21:41,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 14:21:41,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 14:21:41,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:21:41,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:21:41,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-29 14:21:41,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:21:41,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:21:41,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:21:41,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:21:41,800 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:21:41,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-11-29 14:21:41,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60090fd3/7b2cafb0ff334251bf56028712f7dc93/FLAG094006a90 [2020-11-29 14:21:42,466 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:21:42,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-11-29 14:21:42,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60090fd3/7b2cafb0ff334251bf56028712f7dc93/FLAG094006a90 [2020-11-29 14:21:42,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c60090fd3/7b2cafb0ff334251bf56028712f7dc93 [2020-11-29 14:21:42,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:21:42,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:21:42,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:21:42,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:21:42,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:21:42,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:21:42" (1/1) ... [2020-11-29 14:21:42,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492b4568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:42, skipping insertion in model container [2020-11-29 14:21:42,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:21:42" (1/1) ... [2020-11-29 14:21:42,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:21:42,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:21:43,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:21:43,170 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:21:43,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:21:43,220 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:21:43,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43 WrapperNode [2020-11-29 14:21:43,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:21:43,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:21:43,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:21:43,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:21:43,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:21:43,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:21:43,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:21:43,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:21:43,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (1/1) ... [2020-11-29 14:21:43,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:21:43,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:21:43,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:21:43,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:21:43,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (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 [2020-11-29 14:21:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 14:21:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:21:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 14:21:43,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:21:43,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:21:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 14:21:43,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:21:43,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:21:43,760 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 14:21:43,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:43 BoogieIcfgContainer [2020-11-29 14:21:43,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:21:43,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:21:43,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:21:43,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:21:43,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:21:42" (1/3) ... [2020-11-29 14:21:43,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:21:43, skipping insertion in model container [2020-11-29 14:21:43,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:43" (2/3) ... [2020-11-29 14:21:43,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edb773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:21:43, skipping insertion in model container [2020-11-29 14:21:43,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:43" (3/3) ... [2020-11-29 14:21:43,773 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-29 14:21:43,792 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:21:43,796 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:21:43,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:21:43,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:21:43,879 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:21:43,879 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:21:43,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:21:43,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:21:43,880 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:21:43,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:21:43,881 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:21:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-29 14:21:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 14:21:43,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:43,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:43,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:43,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-11-29 14:21:43,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:21:43,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61094468] [2020-11-29 14:21:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:21:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:44,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61094468] [2020-11-29 14:21:44,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:44,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 14:21:44,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391415314] [2020-11-29 14:21:44,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:21:44,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:21:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:21:44,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:21:44,189 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-29 14:21:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:44,211 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-11-29 14:21:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:21:44,213 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-29 14:21:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:44,222 INFO L225 Difference]: With dead ends: 39 [2020-11-29 14:21:44,223 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 14:21:44,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:21:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 14:21:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 14:21:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 14:21:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 14:21:44,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-29 14:21:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:44,266 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 14:21:44,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:21:44,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 14:21:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:21:44,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:44,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:44,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 14:21:44,269 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:44,270 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-11-29 14:21:44,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:21:44,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974044956] [2020-11-29 14:21:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:21:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:44,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974044956] [2020-11-29 14:21:44,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:44,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 14:21:44,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947353035] [2020-11-29 14:21:44,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 14:21:44,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:21:44,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 14:21:44,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 14:21:44,456 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-11-29 14:21:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:44,488 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-29 14:21:44,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 14:21:44,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-29 14:21:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:44,490 INFO L225 Difference]: With dead ends: 24 [2020-11-29 14:21:44,490 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 14:21:44,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 14:21:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 14:21:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 14:21:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 14:21:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-29 14:21:44,496 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-29 14:21:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:44,496 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-29 14:21:44,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 14:21:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-29 14:21:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 14:21:44,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:44,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:44,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 14:21:44,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:44,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:44,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-11-29 14:21:44,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:21:44,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620201146] [2020-11-29 14:21:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:21:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:21:44,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:21:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:21:44,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:21:44,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 14:21:44,785 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 14:21:44,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 14:21:44,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:21:44 BoogieIcfgContainer [2020-11-29 14:21:44,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:21:44,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:21:44,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:21:44,822 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:21:44,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:43" (3/4) ... [2020-11-29 14:21:44,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 14:21:44,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:21:44,830 INFO L168 Benchmark]: Toolchain (without parser) took 1944.04 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.5 MB in the beginning and 23.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:44,831 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 28.5 MB in the beginning and 28.4 MB in the end (delta: 44.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:21:44,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.94 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 17.8 MB in the beginning and 31.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:44,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.56 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 29.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:44,834 INFO L168 Benchmark]: Boogie Preprocessor took 38.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 28.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:44,835 INFO L168 Benchmark]: RCFGBuilder took 449.66 ms. Allocated memory is still 54.5 MB. Free memory was 28.4 MB in the beginning and 27.8 MB in the end (delta: 642.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:44,836 INFO L168 Benchmark]: TraceAbstraction took 1056.95 ms. Allocated memory is still 54.5 MB. Free memory was 27.3 MB in the beginning and 23.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:44,837 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 54.5 MB. Free memory was 23.9 MB in the beginning and 23.6 MB in the end (delta: 316.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:21:44,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 41.9 MB. Free memory was 28.5 MB in the beginning and 28.4 MB in the end (delta: 44.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.94 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 17.8 MB in the beginning and 31.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.56 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 29.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.9 MB in the beginning and 28.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 449.66 ms. Allocated memory is still 54.5 MB. Free memory was 28.4 MB in the beginning and 27.8 MB in the end (delta: 642.4 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1056.95 ms. Allocated memory is still 54.5 MB. Free memory was 27.3 MB in the beginning and 23.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.44 ms. Allocated memory is still 54.5 MB. Free memory was 23.9 MB in the beginning and 23.6 MB in the end (delta: 316.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 14:21:47,513 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 14:21:47,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:21:47,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:21:47,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:21:47,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:21:47,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:21:47,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:21:47,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:21:47,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:21:47,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:21:47,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:21:47,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:21:47,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 14:21:47,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:21:47,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:21:47,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:21:47,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:21:47,716 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:21:47,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:21:47,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:21:47,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:21:47,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:21:47,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:21:47,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:21:47,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:21:47,719 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 14:21:47,719 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 14:21:47,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:21:47,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:21:47,720 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:21:47,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:21:47,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:21:47,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:21:47,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:21:47,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:21:47,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:21:47,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:21:47,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:21:47,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:21:47,723 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 14:21:47,723 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 14:21:47,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:21:47,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:21:47,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 14:21:47,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-29 14:21:48,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:21:48,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:21:48,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:21:48,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:21:48,233 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:21:48,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-11-29 14:21:48,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3134da79/a8ddaa5a7f27439299f28f517099e38b/FLAG8cb2a2262 [2020-11-29 14:21:49,068 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:21:49,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-11-29 14:21:49,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3134da79/a8ddaa5a7f27439299f28f517099e38b/FLAG8cb2a2262 [2020-11-29 14:21:49,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3134da79/a8ddaa5a7f27439299f28f517099e38b [2020-11-29 14:21:49,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:21:49,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:21:49,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:21:49,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:21:49,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:21:49,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf0300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49, skipping insertion in model container [2020-11-29 14:21:49,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:21:49,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:21:49,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:21:49,748 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:21:49,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:21:49,844 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:21:49,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49 WrapperNode [2020-11-29 14:21:49,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:21:49,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:21:49,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:21:49,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:21:49,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:21:49,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:21:49,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:21:49,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:21:49,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (1/1) ... [2020-11-29 14:21:49,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:21:49,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:21:49,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:21:49,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:21:49,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (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 [2020-11-29 14:21:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 14:21:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 14:21:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:21:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 14:21:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:21:50,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:21:50,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:21:51,218 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:21:51,218 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 14:21:51,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:51 BoogieIcfgContainer [2020-11-29 14:21:51,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:21:51,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:21:51,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:21:51,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:21:51,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:21:49" (1/3) ... [2020-11-29 14:21:51,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4839a21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:21:51, skipping insertion in model container [2020-11-29 14:21:51,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:49" (2/3) ... [2020-11-29 14:21:51,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4839a21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:21:51, skipping insertion in model container [2020-11-29 14:21:51,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:51" (3/3) ... [2020-11-29 14:21:51,230 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-29 14:21:51,246 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:21:51,251 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:21:51,264 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:21:51,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:21:51,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:21:51,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:21:51,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:21:51,312 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:21:51,312 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:21:51,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:21:51,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:21:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-29 14:21:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 14:21:51,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:51,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:51,339 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:51,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-11-29 14:21:51,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:21:51,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798007731] [2020-11-29 14:21:51,364 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 [2020-11-29 14:21:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:51,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 14:21:51,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:21:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:51,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:21:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:51,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798007731] [2020-11-29 14:21:51,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:51,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 14:21:51,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534004904] [2020-11-29 14:21:51,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:21:51,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:21:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:21:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:21:51,559 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-29 14:21:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:51,578 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-11-29 14:21:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:21:51,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-29 14:21:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:51,590 INFO L225 Difference]: With dead ends: 39 [2020-11-29 14:21:51,590 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 14:21:51,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:21:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 14:21:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 14:21:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 14:21:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 14:21:51,632 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-29 14:21:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:51,632 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 14:21:51,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:21:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 14:21:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:21:51,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:51,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:51,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 14:21:51,852 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:51,854 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-11-29 14:21:51,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:21:51,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692771094] [2020-11-29 14:21:51,856 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 [2020-11-29 14:21:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:51,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 14:21:51,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:21:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:52,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:21:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:52,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692771094] [2020-11-29 14:21:52,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:52,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-29 14:21:52,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211628069] [2020-11-29 14:21:52,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 14:21:52,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:21:52,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 14:21:52,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 14:21:52,022 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-11-29 14:21:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:52,041 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-29 14:21:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 14:21:52,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-29 14:21:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:52,043 INFO L225 Difference]: With dead ends: 24 [2020-11-29 14:21:52,043 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 14:21:52,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 14:21:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 14:21:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-29 14:21:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 14:21:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-29 14:21:52,049 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-29 14:21:52,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:52,049 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-29 14:21:52,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 14:21:52,050 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-29 14:21:52,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 14:21:52,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:52,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:52,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 14:21:52,267 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:52,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-11-29 14:21:52,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:21:52,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382209260] [2020-11-29 14:21:52,272 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 [2020-11-29 14:21:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:21:52,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:21:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:21:52,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:21:52,614 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 14:21:52,614 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 14:21:52,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 14:21:52,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:21:52 BoogieIcfgContainer [2020-11-29 14:21:52,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:21:52,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:21:52,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:21:52,873 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:21:52,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:51" (3/4) ... [2020-11-29 14:21:52,879 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 14:21:52,940 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 14:21:52,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:21:52,943 INFO L168 Benchmark]: Toolchain (without parser) took 3513.39 ms. Allocated memory is still 50.3 MB. Free memory was 27.5 MB in the beginning and 31.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:52,944 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 41.9 MB. Free memory was 21.5 MB in the beginning and 21.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:21:52,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 27.2 MB in the end (delta: -437.3 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:52,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 25.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:21:52,946 INFO L168 Benchmark]: Boogie Preprocessor took 40.27 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:52,947 INFO L168 Benchmark]: RCFGBuilder took 1279.10 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 33.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:52,948 INFO L168 Benchmark]: TraceAbstraction took 1641.43 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 18.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:52,949 INFO L168 Benchmark]: Witness Printer took 75.82 ms. Allocated memory is still 50.3 MB. Free memory was 18.6 MB in the beginning and 31.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:52,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 41.9 MB. Free memory was 21.5 MB in the beginning and 21.4 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 27.2 MB in the end (delta: -437.3 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.74 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 25.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.27 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 24.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1279.10 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 33.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1641.43 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 18.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 75.82 ms. Allocated memory is still 50.3 MB. Free memory was 18.6 MB in the beginning and 31.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...