./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.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_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ................................................................................................................................................................................................................................................................................................... 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_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ............................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 18:43:30,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:43:30,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:43:30,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:43:30,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:43:30,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:43:30,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:43:30,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:43:30,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:43:30,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:43:30,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:43:30,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:43:30,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:43:30,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:43:30,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:43:30,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:43:30,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:43:30,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:43:30,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:43:30,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:43:30,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:43:30,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:43:30,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:43:30,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:43:30,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:43:30,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:43:30,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:43:30,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:43:30,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:43:30,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:43:30,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:43:30,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:43:30,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:43:30,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:43:30,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:43:30,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:43:30,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:43:30,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:43:30,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:43:30,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:43:30,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:43:30,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:43:30,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:43:30,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:43:30,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:43:30,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:43:30,303 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:43:30,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:43:30,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:43:30,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:43:30,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:43:30,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:43:30,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:43:30,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:43:30,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:43:30,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:43:30,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:43:30,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:43:30,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:43:30,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:43:30,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:43:30,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:43:30,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:43:30,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:43:30,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:43:30,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:43:30,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:43:30,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:43:30,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:43:30,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:43:30,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:43:30,311 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_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-11-29 18:43:30,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:43:30,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:43:30,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:43:30,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:43:30,715 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:43:30,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-29 18:43:30,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/abef5bb46/52ba1e9a66524ee590b100355dd9ab37/FLAGbfe9f27c4 [2020-11-29 18:43:31,329 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:43:31,330 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-29 18:43:31,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/abef5bb46/52ba1e9a66524ee590b100355dd9ab37/FLAGbfe9f27c4 [2020-11-29 18:43:31,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/abef5bb46/52ba1e9a66524ee590b100355dd9ab37 [2020-11-29 18:43:31,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:43:31,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:43:31,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:43:31,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:43:31,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:43:31,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:43:31" (1/1) ... [2020-11-29 18:43:31,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a39bad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:31, skipping insertion in model container [2020-11-29 18:43:31,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:43:31" (1/1) ... [2020-11-29 18:43:31,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:43:31,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:43:32,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:43:32,054 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:43:32,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:43:32,105 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:43:32,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32 WrapperNode [2020-11-29 18:43:32,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:43:32,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:43:32,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:43:32,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:43:32,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:43:32,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:43:32,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:43:32,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:43:32,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... [2020-11-29 18:43:32,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:43:32,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:43:32,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:43:32,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:43:32,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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 [2020-11-29 18:43:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:43:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:43:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 18:43:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:43:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 18:43:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:43:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:43:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:43:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:43:32,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:43:32,868 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 18:43:32,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:43:32 BoogieIcfgContainer [2020-11-29 18:43:32,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:43:32,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:43:32,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:43:32,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:43:32,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:43:31" (1/3) ... [2020-11-29 18:43:32,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2814b47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:43:32, skipping insertion in model container [2020-11-29 18:43:32,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:32" (2/3) ... [2020-11-29 18:43:32,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2814b47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:43:32, skipping insertion in model container [2020-11-29 18:43:32,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:43:32" (3/3) ... [2020-11-29 18:43:32,883 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-29 18:43:32,898 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:43:32,904 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:43:32,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:43:32,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:43:32,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:43:32,970 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:43:32,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:43:32,971 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:43:32,971 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:43:32,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:43:32,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:43:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 18:43:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:43:33,001 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:43:33,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:43:33,003 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:43:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:43:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-29 18:43:33,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:43:33,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780943704] [2020-11-29 18:43:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:43:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:43:33,153 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 18:43:33,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780943704] [2020-11-29 18:43:33,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:43:33,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:43:33,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435280638] [2020-11-29 18:43:33,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:43:33,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:43:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:43:33,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:43:33,177 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-29 18:43:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:43:33,194 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-29 18:43:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:43:33,195 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 18:43:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:43:33,204 INFO L225 Difference]: With dead ends: 35 [2020-11-29 18:43:33,204 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 18:43:33,222 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 18:43:33,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 18:43:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 18:43:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 18:43:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-29 18:43:33,254 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-29 18:43:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:43:33,254 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-29 18:43:33,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:43:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-29 18:43:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:43:33,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:43:33,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:43:33,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:43:33,256 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:43:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:43:33,257 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-29 18:43:33,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:43:33,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283250479] [2020-11-29 18:43:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:43:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:43:33,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:43:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:43:33,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:43:33,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:43:33,576 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:43:33,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:43:33,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:43:33 BoogieIcfgContainer [2020-11-29 18:43:33,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:43:33,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:43:33,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:43:33,615 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:43:33,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:43:32" (3/4) ... [2020-11-29 18:43:33,620 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:43:33,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:43:33,622 INFO L168 Benchmark]: Toolchain (without parser) took 1937.64 ms. Allocated memory is still 125.8 MB. Free memory was 98.2 MB in the beginning and 95.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:33,623 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:33,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.57 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 102.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:33,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.99 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 100.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:33,626 INFO L168 Benchmark]: Boogie Preprocessor took 35.55 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 99.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:33,627 INFO L168 Benchmark]: RCFGBuilder took 678.52 ms. Allocated memory is still 125.8 MB. Free memory was 99.2 MB in the beginning and 82.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:33,628 INFO L168 Benchmark]: TraceAbstraction took 740.83 ms. Allocated memory is still 125.8 MB. Free memory was 82.0 MB in the beginning and 95.1 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:33,629 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 125.8 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:33,633 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 81.8 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.57 ms. Allocated memory is still 125.8 MB. Free memory was 97.8 MB in the beginning and 102.6 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.99 ms. Allocated memory is still 125.8 MB. Free memory was 102.5 MB in the beginning and 100.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.55 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 99.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 678.52 ms. Allocated memory is still 125.8 MB. Free memory was 99.2 MB in the beginning and 82.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 740.83 ms. Allocated memory is still 125.8 MB. Free memory was 82.0 MB in the beginning and 95.1 MB in the end (delta: -13.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.41 ms. Allocated memory is still 125.8 MB. Free memory is still 95.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:43:36,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:43:36,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:43:36,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:43:36,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:43:36,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:43:36,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:43:36,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:43:36,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:43:36,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:43:36,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:43:36,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:43:36,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:43:36,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:43:36,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:43:36,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:43:36,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:43:36,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:43:36,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:43:36,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:43:36,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:43:36,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:43:36,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:43:36,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:43:36,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:43:36,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:43:36,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:43:36,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:43:36,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:43:36,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:43:36,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:43:36,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:43:36,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:43:36,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:43:36,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:43:36,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:43:36,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:43:36,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:43:36,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:43:36,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:43:36,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:43:36,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 18:43:36,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:43:36,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:43:36,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:43:36,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:43:36,646 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:43:36,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:43:36,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:43:36,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:43:36,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:43:36,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:43:36,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:43:36,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:43:36,648 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 18:43:36,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 18:43:36,648 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:43:36,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:43:36,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:43:36,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:43:36,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:43:36,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:43:36,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:43:36,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:43:36,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:43:36,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:43:36,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:43:36,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:43:36,650 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 18:43:36,651 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 18:43:36,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:43:36,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:43:36,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 18:43:36,651 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_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-11-29 18:43:37,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:43:37,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:43:37,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:43:37,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:43:37,086 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:43:37,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-29 18:43:37,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/5db5e7003/150886b3afee4dfc8dfd65fec746b0ee/FLAG95cff0c59 [2020-11-29 18:43:37,755 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:43:37,755 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-29 18:43:37,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/5db5e7003/150886b3afee4dfc8dfd65fec746b0ee/FLAG95cff0c59 [2020-11-29 18:43:38,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/data/5db5e7003/150886b3afee4dfc8dfd65fec746b0ee [2020-11-29 18:43:38,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:43:38,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:43:38,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:43:38,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:43:38,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:43:38,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760e3712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38, skipping insertion in model container [2020-11-29 18:43:38,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:43:38,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:43:38,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:43:38,355 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:43:38,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:43:38,483 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:43:38,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38 WrapperNode [2020-11-29 18:43:38,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:43:38,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:43:38,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:43:38,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:43:38,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:43:38,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:43:38,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:43:38,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:43:38,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... [2020-11-29 18:43:38,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:43:38,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:43:38,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:43:38,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:43:38,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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 [2020-11-29 18:43:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 18:43:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 18:43:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 18:43:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:43:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 18:43:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:43:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:43:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 18:43:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:43:39,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:43:39,400 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-29 18:43:39,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:43:39 BoogieIcfgContainer [2020-11-29 18:43:39,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:43:39,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:43:39,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:43:39,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:43:39,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:43:38" (1/3) ... [2020-11-29 18:43:39,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755ef212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:43:39, skipping insertion in model container [2020-11-29 18:43:39,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:43:38" (2/3) ... [2020-11-29 18:43:39,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755ef212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:43:39, skipping insertion in model container [2020-11-29 18:43:39,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:43:39" (3/3) ... [2020-11-29 18:43:39,424 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-29 18:43:39,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:43:39,440 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:43:39,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:43:39,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:43:39,489 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:43:39,489 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:43:39,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:43:39,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:43:39,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:43:39,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:43:39,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:43:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 18:43:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:43:39,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:43:39,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:43:39,509 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:43:39,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:43:39,516 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-29 18:43:39,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:43:39,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128329617] [2020-11-29 18:43:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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 [2020-11-29 18:43:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:43:39,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 18:43:39,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:43:39,740 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 18:43:39,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:43:39,745 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 18:43:39,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128329617] [2020-11-29 18:43:39,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:43:39,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 18:43:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43086098] [2020-11-29 18:43:39,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:43:39,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:43:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:43:39,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:43:39,773 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-29 18:43:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:43:39,792 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-29 18:43:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:43:39,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 18:43:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:43:39,804 INFO L225 Difference]: With dead ends: 35 [2020-11-29 18:43:39,804 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 18:43:39,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:43:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 18:43:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 18:43:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 18:43:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-29 18:43:39,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-29 18:43:39,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:43:39,846 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-29 18:43:39,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:43:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-29 18:43:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:43:39,847 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:43:39,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:43:40,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 18:43:40,070 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:43:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:43:40,071 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-29 18:43:40,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:43:40,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95138802] [2020-11-29 18:43:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/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 [2020-11-29 18:43:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:43:40,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:43:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:43:40,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:43:40,728 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 18:43:40,728 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:43:40,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 18:43:40,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:43:40 BoogieIcfgContainer [2020-11-29 18:43:40,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:43:40,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:43:40,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:43:40,964 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:43:40,965 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:43:39" (3/4) ... [2020-11-29 18:43:40,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:43:41,036 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1983b986-93c6-4f50-ab98-5c0478e4fb6e/bin/uautomizer/witness.graphml [2020-11-29 18:43:41,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:43:41,039 INFO L168 Benchmark]: Toolchain (without parser) took 2933.08 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 49.9 MB in the beginning and 52.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:41,039 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:41,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.61 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 49.8 MB in the end (delta: -49.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:41,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.95 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 48.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:41,041 INFO L168 Benchmark]: Boogie Preprocessor took 56.04 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:41,042 INFO L168 Benchmark]: RCFGBuilder took 772.44 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 29.8 MB in the end (delta: 16.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:41,043 INFO L168 Benchmark]: TraceAbstraction took 1558.78 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 29.3 MB in the beginning and 54.1 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:43:41,044 INFO L168 Benchmark]: Witness Printer took 72.47 ms. Allocated memory is still 83.9 MB. Free memory was 54.1 MB in the beginning and 52.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:43:41,048 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 67.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.61 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 49.8 MB in the end (delta: -49.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.95 ms. Allocated memory is still 67.1 MB. Free memory was 49.8 MB in the beginning and 48.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.04 ms. Allocated memory is still 67.1 MB. Free memory was 48.3 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 772.44 ms. Allocated memory is still 67.1 MB. Free memory was 46.7 MB in the beginning and 29.8 MB in the end (delta: 16.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1558.78 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 29.3 MB in the beginning and 54.1 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.47 ms. Allocated memory is still 83.9 MB. Free memory was 54.1 MB in the beginning and 52.0 MB in the end (delta: 2.1 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: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...