./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.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_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 ...................................................................................................................................................................................................................................................................................................................... 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_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 .................................................................................................................................................................................................................................................................................................................................. 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 23:57:30,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:57:30,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:57:30,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:57:30,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:57:30,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:57:30,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:57:30,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:57:30,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:57:30,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:57:30,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:57:30,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:57:30,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:57:30,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:57:30,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:57:30,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:57:30,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:57:30,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:57:30,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:57:30,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:57:30,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:57:30,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:57:30,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:57:30,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:57:30,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:57:30,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:57:30,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:57:30,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:57:30,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:57:30,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:57:30,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:30,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:30,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:30,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:30,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:30,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:30,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:30,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:30,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:30,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:30,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:30,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:57:31,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:31,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:31,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:31,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:31,048 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:31,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:31,049 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:31,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:57:31,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:31,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:31,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:31,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:31,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:31,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:31,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:31,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:31,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:31,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:31,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:31,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:31,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:31,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:31,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:31,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:31,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:31,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:57:31,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:57:31,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:31,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:31,057 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_757c57c5-0148-4cf8-8769-741a12565f76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-11-29 23:57:31,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:31,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:31,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:31,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:31,486 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:31,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-29 23:57:31,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/887ad40d8/64b5a3aadd5d4fdc931ecec4f755c41b/FLAG44f855e14 [2020-11-29 23:57:32,374 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:32,376 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-29 23:57:32,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/887ad40d8/64b5a3aadd5d4fdc931ecec4f755c41b/FLAG44f855e14 [2020-11-29 23:57:32,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/887ad40d8/64b5a3aadd5d4fdc931ecec4f755c41b [2020-11-29 23:57:32,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:32,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:32,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:32,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:32,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:32,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc62266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:32, skipping insertion in model container [2020-11-29 23:57:32,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:32" (1/1) ... [2020-11-29 23:57:32,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:32,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:33,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:33,043 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:33,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:33,156 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:33,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33 WrapperNode [2020-11-29 23:57:33,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:33,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:33,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:33,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:33,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:33,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:33,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:33,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... [2020-11-29 23:57:33,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:33,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:33,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:33,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:33,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/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 23:57:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:57:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:57:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 23:57:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 23:57:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:57:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 23:57:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:57:34,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:34,546 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 23:57:34,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:34 BoogieIcfgContainer [2020-11-29 23:57:34,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:34,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:34,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:34,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:34,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:32" (1/3) ... [2020-11-29 23:57:34,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530b22c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:34, skipping insertion in model container [2020-11-29 23:57:34,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:33" (2/3) ... [2020-11-29 23:57:34,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530b22c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:34, skipping insertion in model container [2020-11-29 23:57:34,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:34" (3/3) ... [2020-11-29 23:57:34,559 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-11-29 23:57:34,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:34,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:57:34,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:57:34,626 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:34,626 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:34,627 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:34,627 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:34,627 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:34,627 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:34,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:34,628 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-29 23:57:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:57:34,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:34,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:34,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:34,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:34,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-29 23:57:34,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103075026] [2020-11-29 23:57:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:34,838 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 23:57:34,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103075026] [2020-11-29 23:57:34,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:34,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:57:34,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598997654] [2020-11-29 23:57:34,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:57:34,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:57:34,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:57:34,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:57:34,867 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-29 23:57:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:34,897 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-29 23:57:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:57:34,898 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:57:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:34,911 INFO L225 Difference]: With dead ends: 119 [2020-11-29 23:57:34,912 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 23:57:34,915 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 23:57:34,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 23:57:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 23:57:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 23:57:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-29 23:57:34,996 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-29 23:57:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:34,996 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-29 23:57:34,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:57:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-29 23:57:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:57:35,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:35,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:35,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:57:35,029 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-29 23:57:35,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:35,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730614114] [2020-11-29 23:57:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:57:35,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:57:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:57:35,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:57:35,385 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:57:35,385 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:57:35,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:57:35,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:57:35 BoogieIcfgContainer [2020-11-29 23:57:35,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:57:35,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:57:35,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:57:35,446 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:57:35,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:34" (3/4) ... [2020-11-29 23:57:35,451 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:57:35,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:57:35,455 INFO L168 Benchmark]: Toolchain (without parser) took 2781.96 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 80.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:35,456 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 56.5 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:35,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.33 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 91.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:35,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.41 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 89.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:35,459 INFO L168 Benchmark]: Boogie Preprocessor took 120.27 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 87.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:35,460 INFO L168 Benchmark]: RCFGBuilder took 1160.42 ms. Allocated memory is still 119.5 MB. Free memory was 86.7 MB in the beginning and 53.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:35,461 INFO L168 Benchmark]: TraceAbstraction took 895.28 ms. Allocated memory is still 119.5 MB. Free memory was 52.6 MB in the beginning and 81.6 MB in the end (delta: -29.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:35,462 INFO L168 Benchmark]: Witness Printer took 6.14 ms. Allocated memory is still 119.5 MB. Free memory was 81.6 MB in the beginning and 80.9 MB in the end (delta: 666.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:35,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 56.5 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 494.33 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 91.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.41 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 89.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 120.27 ms. Allocated memory is still 119.5 MB. Free memory was 89.2 MB in the beginning and 87.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1160.42 ms. Allocated memory is still 119.5 MB. Free memory was 86.7 MB in the beginning and 53.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 895.28 ms. Allocated memory is still 119.5 MB. Free memory was 52.6 MB in the beginning and 81.6 MB in the end (delta: -29.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.14 ms. Allocated memory is still 119.5 MB. Free memory was 81.6 MB in the beginning and 80.9 MB in the end (delta: 666.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 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=61occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 23:57:38,552 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 23:57:38,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:57:38,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:57:38,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:57:38,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:57:38,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:57:38,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:57:38,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:57:38,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:57:38,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:57:38,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:57:38,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:57:38,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:57:38,770 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:57:38,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:57:38,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:57:38,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:57:38,778 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:57:38,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:57:38,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:57:38,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:57:38,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:57:38,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:57:38,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:57:38,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:57:38,782 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:57:38,782 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:57:38,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:57:38,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:57:38,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:57:38,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:57:38,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:57:38,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:57:38,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:57:38,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:57:38,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:57:38,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:57:38,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:57:38,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:57:38,785 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:57:38,786 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:57:38,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:57:38,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:57:38,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:57:38,787 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_757c57c5-0148-4cf8-8769-741a12565f76/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-11-29 23:57:39,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:57:39,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:57:39,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:57:39,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:57:39,261 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:57:39,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-29 23:57:39,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/0afe04f7d/5343fa4ff7454d1a8d7268620ad9de56/FLAGc031a2897 [2020-11-29 23:57:40,042 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:57:40,043 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-29 23:57:40,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/0afe04f7d/5343fa4ff7454d1a8d7268620ad9de56/FLAGc031a2897 [2020-11-29 23:57:40,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/data/0afe04f7d/5343fa4ff7454d1a8d7268620ad9de56 [2020-11-29 23:57:40,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:57:40,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:57:40,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:40,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:57:40,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:57:40,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:40,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5575ed1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40, skipping insertion in model container [2020-11-29 23:57:40,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:40,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:57:40,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:57:40,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:40,796 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:57:40,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:57:40,906 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:57:40,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40 WrapperNode [2020-11-29 23:57:40,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:57:40,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:40,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:57:40,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:57:40,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:40,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:57:41,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:57:41,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:57:41,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:57:41,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... [2020-11-29 23:57:41,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:57:41,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:57:41,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:57:41,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:57:41,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/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 23:57:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 23:57:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 23:57:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:57:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:57:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-29 23:57:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 23:57:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:57:41,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:57:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 23:57:41,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:57:45,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:57:45,829 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-29 23:57:45,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:45 BoogieIcfgContainer [2020-11-29 23:57:45,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:57:45,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:57:45,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:57:45,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:57:45,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:57:40" (1/3) ... [2020-11-29 23:57:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ffb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:45, skipping insertion in model container [2020-11-29 23:57:45,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:57:40" (2/3) ... [2020-11-29 23:57:45,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ffb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:57:45, skipping insertion in model container [2020-11-29 23:57:45,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:45" (3/3) ... [2020-11-29 23:57:45,844 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-11-29 23:57:45,857 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:57:45,863 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:57:45,877 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:57:45,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:57:45,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:57:45,925 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:57:45,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:57:45,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:57:45,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:57:45,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:57:45,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:57:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-29 23:57:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:57:45,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:45,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:45,960 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-29 23:57:45,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:57:45,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542190186] [2020-11-29 23:57:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/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 23:57:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:47,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:57:47,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:47,334 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 23:57:47,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:57:47,340 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 23:57:47,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542190186] [2020-11-29 23:57:47,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:57:47,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:57:47,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125235590] [2020-11-29 23:57:47,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:57:47,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:57:47,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:57:47,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:57:47,366 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-29 23:57:47,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:47,394 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-29 23:57:47,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:57:47,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:57:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:47,408 INFO L225 Difference]: With dead ends: 119 [2020-11-29 23:57:47,409 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 23:57:47,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 23:57:47,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 23:57:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-29 23:57:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 23:57:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-29 23:57:47,462 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-29 23:57:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:47,462 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-29 23:57:47,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:57:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-29 23:57:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:57:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:47,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:47,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:57:47,678 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-29 23:57:47,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:57:47,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421065998] [2020-11-29 23:57:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/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 23:57:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:57:49,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:57:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:57:51,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:57:51,907 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 23:57:51,907 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:57:52,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:57:52,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:57:52 BoogieIcfgContainer [2020-11-29 23:57:52,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:57:52,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:57:52,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:57:52,175 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:57:52,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:57:45" (3/4) ... [2020-11-29 23:57:52,178 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:57:52,244 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_757c57c5-0148-4cf8-8769-741a12565f76/bin/uautomizer/witness.graphml [2020-11-29 23:57:52,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:57:52,247 INFO L168 Benchmark]: Toolchain (without parser) took 11877.52 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 39.5 MB in the beginning and 39.7 MB in the end (delta: -215.8 kB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,248 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 60.8 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:57:52,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.66 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 40.3 MB in the end (delta: -987.0 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.76 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 37.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,251 INFO L168 Benchmark]: Boogie Preprocessor took 90.63 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 35.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,252 INFO L168 Benchmark]: RCFGBuilder took 4731.24 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 35.3 MB in the beginning and 61.4 MB in the end (delta: -26.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,253 INFO L168 Benchmark]: TraceAbstraction took 6338.07 ms. Allocated memory is still 83.9 MB. Free memory was 60.9 MB in the beginning and 42.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,254 INFO L168 Benchmark]: Witness Printer took 70.43 ms. Allocated memory is still 83.9 MB. Free memory was 42.3 MB in the beginning and 39.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:57:52,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 60.8 MB. Free memory is still 43.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.66 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 40.3 MB in the end (delta: -987.0 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.76 ms. Allocated memory is still 60.8 MB. Free memory was 40.1 MB in the beginning and 37.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.63 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 35.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4731.24 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 35.3 MB in the beginning and 61.4 MB in the end (delta: -26.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6338.07 ms. Allocated memory is still 83.9 MB. Free memory was 60.9 MB in the beginning and 42.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * Witness Printer took 70.43 ms. Allocated memory is still 83.9 MB. Free memory was 42.3 MB in the beginning and 39.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 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: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 3.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 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...