./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_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/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_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/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 [2020-11-28 02:57:07,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:07,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:07,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:07,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:07,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:07,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:07,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:07,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:07,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:07,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:07,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:07,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:07,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:07,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:07,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:07,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:07,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:07,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:07,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:07,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:07,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:07,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:07,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:07,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:07,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:07,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:07,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:07,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:07,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:07,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:07,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:07,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:07,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:07,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:07,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:07,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:07,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:07,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:07,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:07,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:07,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:07,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:07,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:07,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:07,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:07,601 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:07,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:07,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:07,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:07,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:07,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:07,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:07,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:07,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:07,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:07,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:07,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:07,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:07,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:07,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:07,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:07,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:07,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:07,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:07,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:07,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:07,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:07,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:07,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:07,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:07,604 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_88418ff5-2cdb-42ea-9fdb-5769cae76736/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-11-28 02:57:07,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:07,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:07,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:07,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:07,884 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:07,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-28 02:57:07,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/ebb1f77f4/11bf605665f5445ca216d305bfb8b2c6/FLAG7313ddef8 [2020-11-28 02:57:08,518 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:08,519 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-28 02:57:08,531 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/ebb1f77f4/11bf605665f5445ca216d305bfb8b2c6/FLAG7313ddef8 [2020-11-28 02:57:08,864 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/ebb1f77f4/11bf605665f5445ca216d305bfb8b2c6 [2020-11-28 02:57:08,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:08,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:08,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:08,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:08,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:08,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:08" (1/1) ... [2020-11-28 02:57:08,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ae656c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:08, skipping insertion in model container [2020-11-28 02:57:08,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:08" (1/1) ... [2020-11-28 02:57:08,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:08,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:09,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:09,224 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:09,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:09,280 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:09,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09 WrapperNode [2020-11-28 02:57:09,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:09,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:09,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:09,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:09,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:09,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:09,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:09,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:09,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... [2020-11-28 02:57:09,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:09,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:09,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:09,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:09,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 02:57:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 02:57:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:09,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:57:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 02:57:09,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:10,062 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:10,062 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 02:57:10,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:10 BoogieIcfgContainer [2020-11-28 02:57:10,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:10,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:10,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:10,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:10,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:08" (1/3) ... [2020-11-28 02:57:10,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1a5655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:10, skipping insertion in model container [2020-11-28 02:57:10,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:09" (2/3) ... [2020-11-28 02:57:10,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1a5655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:10, skipping insertion in model container [2020-11-28 02:57:10,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:10" (3/3) ... [2020-11-28 02:57:10,080 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-11-28 02:57:10,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:10,093 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:10,109 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:57:10,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:10,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:10,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:10,160 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:10,160 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:10,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:10,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:10,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-28 02:57:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:10,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:10,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:10,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:10,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-28 02:57:10,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:10,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119300243] [2020-11-28 02:57:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:10,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119300243] [2020-11-28 02:57:10,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:10,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:10,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454077917] [2020-11-28 02:57:10,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:10,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:10,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:10,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:10,393 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-28 02:57:10,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:10,410 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-28 02:57:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:10,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 02:57:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:10,420 INFO L225 Difference]: With dead ends: 119 [2020-11-28 02:57:10,420 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 02:57:10,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 02:57:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 02:57:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 02:57:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-28 02:57:10,458 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-28 02:57:10,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:10,458 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-28 02:57:10,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-28 02:57:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:57:10,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:10,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:10,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:10,460 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-28 02:57:10,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:10,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360229064] [2020-11-28 02:57:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,560 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:10,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:10,661 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:10,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:57:10,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:10,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:10 BoogieIcfgContainer [2020-11-28 02:57:10,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:10,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:10,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:10,705 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:10,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:10" (3/4) ... [2020-11-28 02:57:10,708 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:57:10,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:10,712 INFO L168 Benchmark]: Toolchain (without parser) took 1842.53 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 47.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:10,712 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 71.3 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:10,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.83 ms. Allocated memory is still 98.6 MB. Free memory was 66.6 MB in the beginning and 71.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:10,714 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 69.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:10,714 INFO L168 Benchmark]: Boogie Preprocessor took 47.40 ms. Allocated memory is still 98.6 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:10,715 INFO L168 Benchmark]: RCFGBuilder took 687.22 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 33.5 MB in the end (delta: 33.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:10,715 INFO L168 Benchmark]: TraceAbstraction took 638.73 ms. Allocated memory is still 98.6 MB. Free memory was 33.0 MB in the beginning and 48.3 MB in the end (delta: -15.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:10,716 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 98.6 MB. Free memory was 48.3 MB in the beginning and 47.8 MB in the end (delta: 546.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:10,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 71.3 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.83 ms. Allocated memory is still 98.6 MB. Free memory was 66.6 MB in the beginning and 71.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 69.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.40 ms. Allocated memory is still 98.6 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 687.22 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 33.5 MB in the end (delta: 33.7 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 638.73 ms. Allocated memory is still 98.6 MB. Free memory was 33.0 MB in the beginning and 48.3 MB in the end (delta: -15.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.96 ms. Allocated memory is still 98.6 MB. Free memory was 48.3 MB in the beginning and 47.8 MB in the end (delta: 546.6 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: 0.5s, 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, 0.1s 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 [2020-11-28 02:57:13,196 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-28 02:57:13,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:13,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:13,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:13,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:13,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:13,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:13,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:13,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:13,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:13,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:13,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:13,339 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 02:57:13,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:13,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:13,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:13,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:13,384 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:13,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:13,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:13,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:13,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:13,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:13,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:13,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:13,386 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 02:57:13,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 02:57:13,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:13,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:13,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:13,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:13,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:13,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:13,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:13,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:13,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:13,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:13,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:13,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:13,389 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 02:57:13,389 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 02:57:13,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:13,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:13,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 02:57:13,390 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_88418ff5-2cdb-42ea-9fdb-5769cae76736/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-11-28 02:57:13,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:13,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:13,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:13,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:13,848 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:13,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-28 02:57:13,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/1277a913f/865404da2ade4f70a8f5d00261e04319/FLAGa3854dc4b [2020-11-28 02:57:14,433 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:14,433 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-11-28 02:57:14,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/1277a913f/865404da2ade4f70a8f5d00261e04319/FLAGa3854dc4b [2020-11-28 02:57:14,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/data/1277a913f/865404da2ade4f70a8f5d00261e04319 [2020-11-28 02:57:14,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:14,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:14,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:14,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:14,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c91c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14, skipping insertion in model container [2020-11-28 02:57:14,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:14,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:15,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:15,234 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:15,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:15,351 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:15,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15 WrapperNode [2020-11-28 02:57:15,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:15,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:15,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:15,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:15,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:15,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:15,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:15,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:15,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... [2020-11-28 02:57:15,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:15,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:15,518 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:15,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:15,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 02:57:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 02:57:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 02:57:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-28 02:57:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 02:57:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 02:57:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:19,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:19,465 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 02:57:19,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:19 BoogieIcfgContainer [2020-11-28 02:57:19,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:19,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:19,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:19,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:19,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:14" (1/3) ... [2020-11-28 02:57:19,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f479bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:19, skipping insertion in model container [2020-11-28 02:57:19,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:15" (2/3) ... [2020-11-28 02:57:19,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f479bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:19, skipping insertion in model container [2020-11-28 02:57:19,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:19" (3/3) ... [2020-11-28 02:57:19,476 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-11-28 02:57:19,487 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:19,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:19,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:57:19,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:19,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:19,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:19,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:19,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:19,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:19,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:19,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-28 02:57:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:57:19,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:19,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:19,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-11-28 02:57:19,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:57:19,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671395900] [2020-11-28 02:57:19,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 02:57:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:20,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 02:57:20,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:20,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 02:57:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:20,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671395900] [2020-11-28 02:57:20,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:20,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 02:57:20,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533330221] [2020-11-28 02:57:20,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:20,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 02:57:20,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:20,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:20,842 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-11-28 02:57:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:20,865 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-11-28 02:57:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:20,867 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 02:57:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:20,876 INFO L225 Difference]: With dead ends: 119 [2020-11-28 02:57:20,876 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 02:57:20,879 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 [2020-11-28 02:57:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 02:57:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-28 02:57:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 02:57:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-11-28 02:57:20,923 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-11-28 02:57:20,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:20,923 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-11-28 02:57:20,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-11-28 02:57:20,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:57:20,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:20,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:21,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 02:57:21,125 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-11-28 02:57:21,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 02:57:21,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520377078] [2020-11-28 02:57:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 02:57:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:22,729 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:24,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:24,342 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 02:57:24,342 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:57:24,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 02:57:24,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:24 BoogieIcfgContainer [2020-11-28 02:57:24,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:24,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:24,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:24,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:24,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:19" (3/4) ... [2020-11-28 02:57:24,597 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:57:24,666 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_88418ff5-2cdb-42ea-9fdb-5769cae76736/bin/uautomizer/witness.graphml [2020-11-28 02:57:24,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:24,669 INFO L168 Benchmark]: Toolchain (without parser) took 9770.00 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 36.0 MB in the beginning and 54.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,669 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.4 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:24,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.96 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 37.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.57 ms. Allocated memory is still 58.7 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. [2020-11-28 02:57:24,671 INFO L168 Benchmark]: Boogie Preprocessor took 83.62 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 33.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,672 INFO L168 Benchmark]: RCFGBuilder took 3949.66 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 33.0 MB in the beginning and 55.4 MB in the end (delta: -22.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,673 INFO L168 Benchmark]: TraceAbstraction took 5124.30 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 32.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,673 INFO L168 Benchmark]: Witness Printer took 72.83 ms. Allocated memory is still 75.5 MB. Free memory was 32.3 MB in the beginning and 54.9 MB in the end (delta: -22.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.4 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 449.96 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 37.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.57 ms. Allocated memory is still 58.7 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. * Boogie Preprocessor took 83.62 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 33.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3949.66 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 33.0 MB in the beginning and 55.4 MB in the end (delta: -22.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5124.30 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 32.3 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * Witness Printer took 72.83 ms. Allocated memory is still 75.5 MB. Free memory was 32.3 MB in the beginning and 54.9 MB in the end (delta: -22.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [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: 5.0s, 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, 2.6s SatisfiabilityAnalysisTime, 0.0s 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...