./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:01:57,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:01:57,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:01:57,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:01:57,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:01:57,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:01:57,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:01:57,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:01:57,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:01:57,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:01:57,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:01:57,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:01:57,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:01:57,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:01:57,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:01:57,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:01:57,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:01:57,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:01:57,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:01:57,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:01:57,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:01:57,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:01:57,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:01:57,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:01:57,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:01:57,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:01:57,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:01:57,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:01:57,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:01:57,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:01:57,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:57,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:57,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:57,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:57,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:57,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:57,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:57,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:57,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:57,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:57,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:57,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:01:57,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:57,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:57,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:57,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:57,842 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:57,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:57,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:01:57,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:01:57,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:01:57,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:57,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:01:57,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:01:57,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:01:57,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:01:57,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:57,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:57,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:01:57,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:57,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:57,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:01:57,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:01:57,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:01:57,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:57,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:01:57,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:01:57,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:01:57,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:01:57,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:01:57,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:57,849 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_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-11-28 03:01:58,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:58,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:58,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:58,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:58,220 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:58,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-28 03:01:58,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/dbfa98f63/8588594b04fc4d98afb5844b36db95ce/FLAGc86c30605 [2020-11-28 03:01:58,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:58,987 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-28 03:01:58,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/dbfa98f63/8588594b04fc4d98afb5844b36db95ce/FLAGc86c30605 [2020-11-28 03:01:59,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/dbfa98f63/8588594b04fc4d98afb5844b36db95ce [2020-11-28 03:01:59,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:59,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:59,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:59,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:59,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:59,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abadc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59, skipping insertion in model container [2020-11-28 03:01:59,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:59,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:59,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:59,670 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:59,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:59,765 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:59,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59 WrapperNode [2020-11-28 03:01:59,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:59,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:59,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:59,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:59,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:59,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:59,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:59,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:59,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... [2020-11-28 03:01:59,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:59,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:59,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:59,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:59,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:01:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:01:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:01:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:01:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:01:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:01:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:59,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:01:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:00,484 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:00,485 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:02:00,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:00 BoogieIcfgContainer [2020-11-28 03:02:00,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:00,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:00,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:00,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:00,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:01:59" (1/3) ... [2020-11-28 03:02:00,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f48d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:00, skipping insertion in model container [2020-11-28 03:02:00,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:59" (2/3) ... [2020-11-28 03:02:00,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f48d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:00, skipping insertion in model container [2020-11-28 03:02:00,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:00" (3/3) ... [2020-11-28 03:02:00,499 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-28 03:02:00,522 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:00,528 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:02:00,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:02:00,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:00,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:02:00,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:00,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:00,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:00,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:00,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:00,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:02:00,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:02:00,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:00,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:00,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-28 03:02:00,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:00,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038027651] [2020-11-28 03:02:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:00,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038027651] [2020-11-28 03:02:00,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:00,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:02:00,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124381793] [2020-11-28 03:02:00,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:02:00,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:02:00,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:00,876 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-28 03:02:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:00,897 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-28 03:02:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:00,899 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:02:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:00,919 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:02:00,922 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:02:00,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:02:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:02:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:02:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-28 03:02:00,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-28 03:02:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:00,974 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-28 03:02:00,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:02:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-28 03:02:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:02:00,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:00,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:00,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:02:00,977 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:00,983 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-28 03:02:00,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:02:00,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090853361] [2020-11-28 03:02:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:02:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:01,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:01,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:01,333 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:02:01,334 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:02:01,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:02:01,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:01 BoogieIcfgContainer [2020-11-28 03:02:01,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:01,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:01,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:01,370 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:01,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:00" (3/4) ... [2020-11-28 03:02:01,374 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:02:01,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:01,377 INFO L168 Benchmark]: Toolchain (without parser) took 2046.30 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.2 MB in the beginning and 67.6 MB in the end (delta: -21.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:01,378 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 79.7 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:01,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.15 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.1 MB in the beginning and 73.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:01,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.78 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 71.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:01,382 INFO L168 Benchmark]: Boogie Preprocessor took 66.63 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 70.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:01,383 INFO L168 Benchmark]: RCFGBuilder took 566.82 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 53.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:01,383 INFO L168 Benchmark]: TraceAbstraction took 878.57 ms. Allocated memory is still 96.5 MB. Free memory was 52.9 MB in the beginning and 67.6 MB in the end (delta: -14.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:01,384 INFO L168 Benchmark]: Witness Printer took 5.34 ms. Allocated memory is still 96.5 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:01,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 79.7 MB. Free memory was 52.7 MB in the beginning and 52.7 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 437.15 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 46.1 MB in the beginning and 73.5 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.78 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 71.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.63 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 70.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.82 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 53.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 878.57 ms. Allocated memory is still 96.5 MB. Free memory was 52.9 MB in the beginning and 67.6 MB in the end (delta: -14.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.34 ms. Allocated memory is still 96.5 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:02:04,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:02:04,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:02:04,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:02:04,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:02:04,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:02:04,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:02:04,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:02:04,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:02:04,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:02:04,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:02:04,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:02:04,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:02:04,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:02:04,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:02:04,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:02:04,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:02:04,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:02:04,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:02:04,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:02:04,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:02:04,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:02:04,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:02:04,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:02:04,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:02:04,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:02:04,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:02:04,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:02:04,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:02:04,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:02:04,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:02:04,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:02:04,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:02:04,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:02:04,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:02:04,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:02:04,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:02:04,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:02:04,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:02:04,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:02:04,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:02:04,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:02:04,298 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:02:04,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:02:04,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:02:04,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:02:04,308 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:02:04,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:02:04,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:02:04,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:02:04,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:02:04,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:02:04,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:02:04,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:02:04,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:02:04,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:02:04,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:02:04,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:02:04,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:02:04,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:02:04,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:02:04,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:02:04,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:02:04,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:02:04,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:04,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:02:04,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:02:04,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:02:04,316 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:02:04,316 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:02:04,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:02:04,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:02:04,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:02:04,317 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_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-11-28 03:02:04,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:02:04,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:02:04,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:02:04,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:02:04,867 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:02:04,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-28 03:02:04,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/9d8435102/73701ab4ffed402998b254d8f40047cc/FLAG1953856a9 [2020-11-28 03:02:05,602 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:02:05,603 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-11-28 03:02:05,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/9d8435102/73701ab4ffed402998b254d8f40047cc/FLAG1953856a9 [2020-11-28 03:02:05,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/data/9d8435102/73701ab4ffed402998b254d8f40047cc [2020-11-28 03:02:05,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:02:05,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:02:05,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:05,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:02:05,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:02:05,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:05" (1/1) ... [2020-11-28 03:02:05,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752f7284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:05, skipping insertion in model container [2020-11-28 03:02:05,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:02:05" (1/1) ... [2020-11-28 03:02:05,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:02:05,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:02:06,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:06,150 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:02:06,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:02:06,254 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:02:06,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06 WrapperNode [2020-11-28 03:02:06,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:02:06,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:06,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:02:06,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:02:06,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:02:06,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:02:06,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:02:06,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:02:06,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... [2020-11-28 03:02:06,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:02:06,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:02:06,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:02:06,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:02:06,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:02:06,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:02:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:02:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:02:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:02:06,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:02:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:02:06,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:02:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:02:06,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:02:06,945 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:02:06,946 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:02:06,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:06 BoogieIcfgContainer [2020-11-28 03:02:06,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:02:06,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:02:06,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:02:06,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:02:06,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:02:05" (1/3) ... [2020-11-28 03:02:06,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b67d136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:06, skipping insertion in model container [2020-11-28 03:02:06,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:02:06" (2/3) ... [2020-11-28 03:02:06,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b67d136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:02:06, skipping insertion in model container [2020-11-28 03:02:06,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:06" (3/3) ... [2020-11-28 03:02:06,966 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-28 03:02:06,980 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:02:06,987 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:02:07,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:02:07,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:02:07,052 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:02:07,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:02:07,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:02:07,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:02:07,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:02:07,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:02:07,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:02:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:02:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:02:07,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:07,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:07,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-28 03:02:07,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:02:07,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939821208] [2020-11-28 03:02:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:02:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:02:07,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:02:07,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:02:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:07,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:02:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:02:07,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939821208] [2020-11-28 03:02:07,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:02:07,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:02:07,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345640685] [2020-11-28 03:02:07,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:02:07,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:02:07,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:02:07,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:07,327 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-28 03:02:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:02:07,374 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-28 03:02:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:02:07,376 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:02:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:02:07,386 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:02:07,389 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:02:07,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:02:07,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:02:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:02:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:02:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-28 03:02:07,435 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-28 03:02:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:02:07,435 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-28 03:02:07,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:02:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-28 03:02:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:02:07,444 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:02:07,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:02:07,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:02:07,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:02:07,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:02:07,646 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-28 03:02:07,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:02:07,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233869394] [2020-11-28 03:02:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:02:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:07,962 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:02:08,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:02:08,271 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:02:08,272 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:02:08,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:02:08,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:02:08 BoogieIcfgContainer [2020-11-28 03:02:08,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:02:08,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:02:08,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:02:08,507 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:02:08,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:02:06" (3/4) ... [2020-11-28 03:02:08,509 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:02:08,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1615f3eb-ed4a-4383-a6a2-f48f2ec79d37/bin/uautomizer/witness.graphml [2020-11-28 03:02:08,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:02:08,585 INFO L168 Benchmark]: Toolchain (without parser) took 2665.79 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 49.0 MB in the beginning and 54.3 MB in the end (delta: -5.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:08,586 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 69.2 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:08,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.38 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 50.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:08,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 48.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:02:08,592 INFO L168 Benchmark]: Boogie Preprocessor took 45.15 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 47.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:08,593 INFO L168 Benchmark]: RCFGBuilder took 596.41 ms. Allocated memory is still 69.2 MB. Free memory was 47.3 MB in the beginning and 49.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:08,594 INFO L168 Benchmark]: TraceAbstraction took 1555.52 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 49.3 MB in the beginning and 56.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:08,596 INFO L168 Benchmark]: Witness Printer took 76.60 ms. Allocated memory is still 92.3 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:02:08,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 69.2 MB. Free memory is still 50.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 335.38 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 50.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 48.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.15 ms. Allocated memory is still 69.2 MB. Free memory was 48.8 MB in the beginning and 47.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 596.41 ms. Allocated memory is still 69.2 MB. Free memory was 47.3 MB in the beginning and 49.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1555.52 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 49.3 MB in the beginning and 56.9 MB in the end (delta: -7.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Witness Printer took 76.60 ms. Allocated memory is still 92.3 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...