./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 ............................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:25,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:25,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:25,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:25,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:25,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:25,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:25,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:25,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:25,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:25,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:25,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:25,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:25,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:25,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:25,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:25,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:25,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:25,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:25,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:25,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:25,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:25,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:25,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:25,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:25,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:25,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:25,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:25,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:25,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:25,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:25,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:25,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:25,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:25,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:25,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:25,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:25,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:25,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:25,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:25,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:25,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:25,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:25,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:25,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:25,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:25,446 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:25,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:25,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:25,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:25,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:25,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:25,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:25,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:25,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:25,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:25,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:25,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:25,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:25,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:25,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:25,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:25,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:25,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:25,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:25,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:25,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:25,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:25,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:25,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:25,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:25,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-11-28 03:13:25,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:25,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:25,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:25,786 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:25,787 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:25,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 03:13:25,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/7f54c857c/18b8b69ed7644974b7b1a93da826236d/FLAG2d7fac35a [2020-11-28 03:13:26,387 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:26,388 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 03:13:26,396 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/7f54c857c/18b8b69ed7644974b7b1a93da826236d/FLAG2d7fac35a [2020-11-28 03:13:26,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/7f54c857c/18b8b69ed7644974b7b1a93da826236d [2020-11-28 03:13:26,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:26,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:26,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:26,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:26,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:26,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:26" (1/1) ... [2020-11-28 03:13:26,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5302d1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:26, skipping insertion in model container [2020-11-28 03:13:26,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:26" (1/1) ... [2020-11-28 03:13:26,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:26,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:27,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:27,063 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:27,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:27,125 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:27,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27 WrapperNode [2020-11-28 03:13:27,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:27,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:27,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:27,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:27,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:27,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:27,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:27,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:27,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... [2020-11-28 03:13:27,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:27,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:27,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:27,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:27,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:27,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:27,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:27,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:13:27,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:13:27,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:13:27,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:27,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:27,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:13:27,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:28,114 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:28,114 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 03:13:28,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:28 BoogieIcfgContainer [2020-11-28 03:13:28,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:28,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:28,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:28,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:28,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:26" (1/3) ... [2020-11-28 03:13:28,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b735513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:28, skipping insertion in model container [2020-11-28 03:13:28,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:27" (2/3) ... [2020-11-28 03:13:28,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b735513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:28, skipping insertion in model container [2020-11-28 03:13:28,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:28" (3/3) ... [2020-11-28 03:13:28,131 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-28 03:13:28,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:28,148 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:28,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:28,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:28,180 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:28,180 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:28,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:28,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:28,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:28,181 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:28,181 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-28 03:13:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:13:28,219 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:28,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:28,220 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-11-28 03:13:28,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:28,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309805020] [2020-11-28 03:13:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:28,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309805020] [2020-11-28 03:13:28,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:28,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:28,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097929076] [2020-11-28 03:13:28,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:13:28,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:28,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:13:28,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:28,385 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-28 03:13:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:28,407 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-28 03:13:28,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:13:28,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:13:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:28,419 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:13:28,419 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:13:28,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:13:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 03:13:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:13:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-11-28 03:13:28,461 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-11-28 03:13:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:28,462 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-11-28 03:13:28,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:13:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-11-28 03:13:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:13:28,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:28,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:28,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:28,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-11-28 03:13:28,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:28,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092852097] [2020-11-28 03:13:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:28,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:28,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:28,561 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:28,562 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:13:28,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:28,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:28 BoogieIcfgContainer [2020-11-28 03:13:28,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:28,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:28,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:28,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:28,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:28" (3/4) ... [2020-11-28 03:13:28,598 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:13:28,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:28,601 INFO L168 Benchmark]: Toolchain (without parser) took 1855.59 ms. Allocated memory is still 115.3 MB. Free memory was 85.3 MB in the beginning and 74.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:28,601 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:28,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.54 ms. Allocated memory is still 115.3 MB. Free memory was 85.0 MB in the beginning and 90.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:28,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.86 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 88.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:28,604 INFO L168 Benchmark]: Boogie Preprocessor took 45.08 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 86.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:28,605 INFO L168 Benchmark]: RCFGBuilder took 886.87 ms. Allocated memory is still 115.3 MB. Free memory was 86.0 MB in the beginning and 58.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:28,605 INFO L168 Benchmark]: TraceAbstraction took 471.64 ms. Allocated memory is still 115.3 MB. Free memory was 58.0 MB in the beginning and 75.0 MB in the end (delta: -17.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:28,606 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 74.7 MB in the end (delta: 324.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:28,610 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 90.2 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.54 ms. Allocated memory is still 115.3 MB. Free memory was 85.0 MB in the beginning and 90.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.86 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 88.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.08 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 86.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 886.87 ms. Allocated memory is still 115.3 MB. Free memory was 86.0 MB in the beginning and 58.5 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 471.64 ms. Allocated memory is still 115.3 MB. Free memory was 58.0 MB in the beginning and 75.0 MB in the end (delta: -17.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 74.7 MB in the end (delta: 324.2 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 someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 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=54occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:31,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:31,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:31,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:31,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:31,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:31,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:31,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:31,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:31,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:31,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:31,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:31,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:31,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:31,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:31,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:31,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:31,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:31,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:31,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:31,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:31,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:31,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:31,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:31,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:31,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:31,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:31,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:31,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:31,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:31,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:31,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:31,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:31,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:31,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:31,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:31,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:31,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:31,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:31,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:31,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:31,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:13:31,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:31,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:31,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:31,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:31,504 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:31,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:31,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:31,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:31,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:31,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:31,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:31,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:31,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:13:31,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:13:31,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:31,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:31,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:31,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:31,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:31,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:31,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:31,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:31,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:31,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:31,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:31,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:31,511 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:13:31,511 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:13:31,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:31,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:31,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:13:31,512 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-11-28 03:13:31,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:31,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:31,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:31,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:31,978 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:31,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 03:13:32,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/d398201c2/953d5e8943184493b0b3155b0e34473b/FLAG29764ce51 [2020-11-28 03:13:32,675 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:32,676 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-11-28 03:13:32,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/d398201c2/953d5e8943184493b0b3155b0e34473b/FLAG29764ce51 [2020-11-28 03:13:33,040 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/data/d398201c2/953d5e8943184493b0b3155b0e34473b [2020-11-28 03:13:33,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:33,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:33,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:33,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:33,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:33,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e418482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33, skipping insertion in model container [2020-11-28 03:13:33,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:33,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:33,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:33,301 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:33,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:33,456 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:33,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33 WrapperNode [2020-11-28 03:13:33,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:33,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:33,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:33,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:33,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:33,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:33,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:33,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:33,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... [2020-11-28 03:13:33,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:33,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:33,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:33,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:33,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:13:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:13:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:13:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:13:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:13:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:37,655 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:37,659 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 03:13:37,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:37 BoogieIcfgContainer [2020-11-28 03:13:37,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:37,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:37,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:37,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:37,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:33" (1/3) ... [2020-11-28 03:13:37,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f77d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:37, skipping insertion in model container [2020-11-28 03:13:37,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:33" (2/3) ... [2020-11-28 03:13:37,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f77d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:37, skipping insertion in model container [2020-11-28 03:13:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:37" (3/3) ... [2020-11-28 03:13:37,677 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-11-28 03:13:37,690 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:37,696 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:37,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:37,742 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:37,742 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:37,742 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:37,742 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:37,743 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:37,743 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:37,743 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:37,743 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-11-28 03:13:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:13:37,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:37,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:37,765 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-11-28 03:13:37,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:13:37,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676315680] [2020-11-28 03:13:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:13:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:38,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:13:38,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:38,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:13:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:38,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676315680] [2020-11-28 03:13:38,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:38,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:13:38,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254546517] [2020-11-28 03:13:38,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:13:38,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:13:38,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:13:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:38,281 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2020-11-28 03:13:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:38,309 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2020-11-28 03:13:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:13:38,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:13:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:38,323 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:13:38,324 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:13:38,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:13:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 03:13:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:13:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-11-28 03:13:38,372 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-11-28 03:13:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:38,372 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-11-28 03:13:38,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:13:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-11-28 03:13:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:13:38,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:38,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:38,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:13:38,589 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-11-28 03:13:38,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:13:38,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081079606] [2020-11-28 03:13:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:13:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:39,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:13:39,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:39,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:13:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:39,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081079606] [2020-11-28 03:13:39,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:39,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:13:39,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840602329] [2020-11-28 03:13:39,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:13:39,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:13:39,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:13:39,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:13:39,303 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-11-28 03:13:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:42,144 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-11-28 03:13:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:13:42,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-28 03:13:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:42,576 INFO L225 Difference]: With dead ends: 59 [2020-11-28 03:13:42,576 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:13:42,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:13:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:13:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:13:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:13:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 03:13:42,582 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-11-28 03:13:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:42,582 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 03:13:42,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:13:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 03:13:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:13:42,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:42,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:42,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:13:42,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:42,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-11-28 03:13:42,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:13:42,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314637143] [2020-11-28 03:13:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:13:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:42,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:13:42,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:43,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:13:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:43,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314637143] [2020-11-28 03:13:43,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:43,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-28 03:13:43,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575680704] [2020-11-28 03:13:43,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:13:43,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:13:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:13:43,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:13:43,063 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-11-28 03:13:45,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:45,373 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 03:13:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:13:45,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-28 03:13:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:45,375 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:13:45,375 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:13:45,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:13:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:13:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-11-28 03:13:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:13:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-28 03:13:45,383 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-11-28 03:13:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:45,383 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-28 03:13:45,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:13:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-28 03:13:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:13:45,384 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:45,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:45,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:13:45,601 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:45,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,602 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-11-28 03:13:45,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:13:45,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143002320] [2020-11-28 03:13:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 03:13:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:46,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:48,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:48,159 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:13:48,160 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:13:48,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:13:48,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:48 BoogieIcfgContainer [2020-11-28 03:13:48,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:48,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:48,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:48,404 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:48,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:37" (3/4) ... [2020-11-28 03:13:48,407 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:13:48,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b30b5512-40d8-40b1-8104-8350ebebd953/bin/uautomizer/witness.graphml [2020-11-28 03:13:48,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:48,497 INFO L168 Benchmark]: Toolchain (without parser) took 15450.70 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 35.7 MB in the beginning and 64.3 MB in the end (delta: -28.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:48,497 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:48,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.72 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 52.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:48,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.69 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 50.5 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:48,500 INFO L168 Benchmark]: Boogie Preprocessor took 47.12 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 48.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:48,500 INFO L168 Benchmark]: RCFGBuilder took 4084.91 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 38.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:48,501 INFO L168 Benchmark]: TraceAbstraction took 10736.14 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 38.4 MB in the beginning and 37.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:48,502 INFO L168 Benchmark]: Witness Printer took 90.95 ms. Allocated memory is still 83.9 MB. Free memory was 37.3 MB in the beginning and 64.3 MB in the end (delta: -27.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:48,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.72 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 52.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.69 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 50.5 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.12 ms. Allocated memory is still 69.2 MB. Free memory was 50.5 MB in the beginning and 48.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4084.91 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 38.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10736.14 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 38.4 MB in the beginning and 37.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Witness Printer took 90.95 ms. Allocated memory is still 83.9 MB. Free memory was 37.3 MB in the beginning and 64.3 MB in the end (delta: -27.1 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: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 103 SDslu, 24 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1306 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 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...