./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.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_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/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 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ................................................................................................................................................................................................................................................................................................. 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_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/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 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:59:10,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:59:10,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:59:10,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:59:10,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:59:10,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:59:10,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:59:10,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:59:10,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:59:10,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:59:10,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:59:10,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:59:10,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:59:10,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:59:10,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:59:10,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:59:10,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:59:10,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:59:10,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:59:10,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:59:10,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:59:10,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:59:10,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:59:10,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:59:10,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:59:10,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:59:10,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:59:10,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:59:10,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:59:10,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:59:10,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:59:10,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:59:10,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:59:10,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:59:10,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:59:10,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:59:10,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:59:10,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:59:10,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:59:10,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:59:10,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:59:10,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:59:11,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:59:11,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:59:11,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:59:11,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:59:11,034 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:59:11,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:59:11,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:59:11,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:59:11,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:59:11,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:59:11,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:59:11,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:59:11,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:59:11,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:59:11,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:59:11,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:59:11,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:59:11,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:59:11,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:59:11,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:59:11,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:59:11,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:59:11,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:59:11,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:59:11,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:59:11,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:59:11,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:59:11,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:59:11,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:59:11,042 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_6a983d15-2bc3-485f-af7c-9d851306468e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-29 23:59:11,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:59:11,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:59:11,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:59:11,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:59:11,489 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:59:11,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-29 23:59:11,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/a7b63fcf9/d0dc48b7040e4b9a81618af1b429c19e/FLAG39ed793cd [2020-11-29 23:59:12,238 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:59:12,239 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-29 23:59:12,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/a7b63fcf9/d0dc48b7040e4b9a81618af1b429c19e/FLAG39ed793cd [2020-11-29 23:59:12,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/a7b63fcf9/d0dc48b7040e4b9a81618af1b429c19e [2020-11-29 23:59:12,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:59:12,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:59:12,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:59:12,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:59:12,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:59:12,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:12,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9e9bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12, skipping insertion in model container [2020-11-29 23:59:12,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:12,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:59:12,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:59:12,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:59:12,920 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:59:12,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:59:12,977 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:59:12,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12 WrapperNode [2020-11-29 23:59:12,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:59:12,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:59:12,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:59:12,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:59:12,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:59:13,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:59:13,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:59:13,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:59:13,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... [2020-11-29 23:59:13,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:59:13,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:59:13,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:59:13,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:59:13,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:59:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:59:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:59:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 23:59:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:59:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 23:59:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:59:13,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:59:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:59:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:59:13,869 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:59:13,872 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:59:13,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:13 BoogieIcfgContainer [2020-11-29 23:59:13,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:59:13,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:59:13,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:59:13,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:59:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:59:12" (1/3) ... [2020-11-29 23:59:13,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5047ee13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:59:13, skipping insertion in model container [2020-11-29 23:59:13,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:12" (2/3) ... [2020-11-29 23:59:13,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5047ee13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:59:13, skipping insertion in model container [2020-11-29 23:59:13,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:13" (3/3) ... [2020-11-29 23:59:13,887 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-29 23:59:13,901 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:59:13,907 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:59:13,921 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:59:13,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:59:13,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:59:13,970 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:59:13,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:59:13,971 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:59:13,971 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:59:13,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:59:13,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:59:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-29 23:59:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:59:13,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:13,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:13,999 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:14,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-29 23:59:14,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:14,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216274179] [2020-11-29 23:59:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:14,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216274179] [2020-11-29 23:59:14,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:14,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:59:14,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488667242] [2020-11-29 23:59:14,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:59:14,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:14,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:59:14,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:59:14,218 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-29 23:59:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:14,240 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-29 23:59:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:59:14,241 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 23:59:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:14,253 INFO L225 Difference]: With dead ends: 51 [2020-11-29 23:59:14,254 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:59:14,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:59:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:59:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:59:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:59:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-29 23:59:14,303 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-29 23:59:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:14,304 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-29 23:59:14,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:59:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-29 23:59:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:59:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:14,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:14,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:59:14,307 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:14,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:14,311 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-29 23:59:14,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:14,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755918211] [2020-11-29 23:59:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:14,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:59:14,500 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:59:14,529 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:59:14,529 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:59:14,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:59:14,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:59:14 BoogieIcfgContainer [2020-11-29 23:59:14,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:59:14,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:59:14,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:59:14,579 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:59:14,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:13" (3/4) ... [2020-11-29 23:59:14,584 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:59:14,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:59:14,589 INFO L168 Benchmark]: Toolchain (without parser) took 1972.93 ms. Allocated memory is still 123.7 MB. Free memory was 89.2 MB in the beginning and 53.5 MB in the end (delta: 35.7 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:14,591 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:14,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.87 ms. Allocated memory is still 123.7 MB. Free memory was 89.2 MB in the beginning and 97.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:14,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.87 ms. Allocated memory is still 123.7 MB. Free memory was 97.5 MB in the beginning and 95.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:14,595 INFO L168 Benchmark]: Boogie Preprocessor took 49.44 ms. Allocated memory is still 123.7 MB. Free memory was 95.4 MB in the beginning and 94.7 MB in the end (delta: 759.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:14,597 INFO L168 Benchmark]: RCFGBuilder took 766.90 ms. Allocated memory is still 123.7 MB. Free memory was 94.0 MB in the beginning and 77.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:14,599 INFO L168 Benchmark]: TraceAbstraction took 700.70 ms. Allocated memory is still 123.7 MB. Free memory was 76.5 MB in the beginning and 53.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:14,601 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 123.7 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:14,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 33.3 MB in the beginning and 33.3 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.87 ms. Allocated memory is still 123.7 MB. Free memory was 89.2 MB in the beginning and 97.5 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.87 ms. Allocated memory is still 123.7 MB. Free memory was 97.5 MB in the beginning and 95.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.44 ms. Allocated memory is still 123.7 MB. Free memory was 95.4 MB in the beginning and 94.7 MB in the end (delta: 759.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 766.90 ms. Allocated memory is still 123.7 MB. Free memory was 94.0 MB in the beginning and 77.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 700.70 ms. Allocated memory is still 123.7 MB. Free memory was 76.5 MB in the beginning and 53.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 123.7 MB. Free memory is still 53.5 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 someBinaryFLOATComparisonOperation at line 59, overapproximation of someBinaryArithmeticFLOAToperation at line 68, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; VAL [huge_ceil=1000000000000000000000000000000] [L68] float x = 0.0f / 0.0f; [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000] [L25] COND FALSE !(j0 < 23) VAL [huge_ceil=1000000000000000000000000000000] [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [huge_ceil=1000000000000000000000000000000] [L70] float res = ceil_float(x); [L59] return x != x; VAL [huge_ceil=1000000000000000000000000000000] [L73] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1091.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 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: 34 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=27occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:59:17,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:59:17,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:59:17,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:59:17,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:59:17,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:59:17,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:59:17,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:59:17,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:59:17,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:59:17,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:59:17,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:59:17,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:59:17,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:59:17,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:59:17,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:59:17,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:59:17,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:59:17,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:59:17,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:59:17,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:59:17,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:59:17,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:59:17,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:59:17,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:59:17,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:59:17,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:59:17,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:59:17,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:59:17,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:59:17,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:59:17,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:59:17,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:59:17,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:59:17,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:59:17,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:59:17,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:59:17,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:59:17,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:59:17,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:59:17,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:59:17,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:59:17,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:59:17,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:59:17,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:59:17,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:59:17,770 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:59:17,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:59:17,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:59:17,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:59:17,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:59:17,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:59:17,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:59:17,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:59:17,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:59:17,772 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:59:17,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:59:17,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:59:17,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:59:17,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:59:17,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:59:17,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:59:17,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:59:17,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:59:17,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:59:17,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:59:17,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:59:17,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:59:17,776 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:59:17,776 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:59:17,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:59:17,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:59:17,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:59:17,796 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_6a983d15-2bc3-485f-af7c-9d851306468e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29db272de411ec8ad8f5c2bb2f7576cb66abdc0d [2020-11-29 23:59:18,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:59:18,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:59:18,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:59:18,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:59:18,317 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:59:18,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-29 23:59:18,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/ecfb2f002/07996fa677404a48a83157fd746250ec/FLAG1223b51d9 [2020-11-29 23:59:19,095 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:59:19,098 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2020-11-29 23:59:19,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/ecfb2f002/07996fa677404a48a83157fd746250ec/FLAG1223b51d9 [2020-11-29 23:59:19,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/data/ecfb2f002/07996fa677404a48a83157fd746250ec [2020-11-29 23:59:19,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:59:19,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:59:19,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:59:19,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:59:19,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:59:19,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@724758fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19, skipping insertion in model container [2020-11-29 23:59:19,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:59:19,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:59:19,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:59:19,675 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:59:19,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:59:19,768 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:59:19,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19 WrapperNode [2020-11-29 23:59:19,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:59:19,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:59:19,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:59:19,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:59:19,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:59:19,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:59:19,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:59:19,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:59:19,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... [2020-11-29 23:59:19,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:59:19,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:59:19,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:59:19,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:59:19,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:59:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:59:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:59:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 23:59:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 23:59:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:59:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:59:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 23:59:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 23:59:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:59:21,048 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:59:21,049 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:59:21,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:21 BoogieIcfgContainer [2020-11-29 23:59:21,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:59:21,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:59:21,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:59:21,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:59:21,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:59:19" (1/3) ... [2020-11-29 23:59:21,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc67894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:59:21, skipping insertion in model container [2020-11-29 23:59:21,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:59:19" (2/3) ... [2020-11-29 23:59:21,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc67894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:59:21, skipping insertion in model container [2020-11-29 23:59:21,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:21" (3/3) ... [2020-11-29 23:59:21,064 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2020-11-29 23:59:21,078 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:59:21,083 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:59:21,101 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:59:21,146 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:59:21,161 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:59:21,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:59:21,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:59:21,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:59:21,162 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:59:21,162 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:59:21,162 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:59:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-29 23:59:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:59:21,191 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:21,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:21,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:21,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2022266355, now seen corresponding path program 1 times [2020-11-29 23:59:21,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:21,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886609480] [2020-11-29 23:59:21,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:21,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:59:21,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:21,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:21,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886609480] [2020-11-29 23:59:21,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:21,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:59:21,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518047505] [2020-11-29 23:59:21,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:59:21,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:21,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:59:21,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:59:21,488 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-29 23:59:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:21,518 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2020-11-29 23:59:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:59:21,520 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 23:59:21,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:21,532 INFO L225 Difference]: With dead ends: 51 [2020-11-29 23:59:21,532 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:59:21,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:59:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:59:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:59:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:59:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2020-11-29 23:59:21,576 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 10 [2020-11-29 23:59:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:21,576 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2020-11-29 23:59:21,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:59:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-29 23:59:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:59:21,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:21,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:21,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:59:21,794 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:21,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:21,795 INFO L82 PathProgramCache]: Analyzing trace with hash -62606256, now seen corresponding path program 1 times [2020-11-29 23:59:21,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:21,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718970100] [2020-11-29 23:59:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:21,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:59:21,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:22,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:22,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718970100] [2020-11-29 23:59:22,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:22,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 23:59:22,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227561965] [2020-11-29 23:59:22,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 23:59:22,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:22,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 23:59:22,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:59:22,326 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 10 states. [2020-11-29 23:59:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:23,033 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-29 23:59:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:59:23,034 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-29 23:59:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:23,034 INFO L225 Difference]: With dead ends: 34 [2020-11-29 23:59:23,035 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 23:59:23,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:59:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 23:59:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-29 23:59:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 23:59:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-29 23:59:23,039 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2020-11-29 23:59:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:23,040 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-29 23:59:23,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 23:59:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-29 23:59:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:59:23,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:23,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:23,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:59:23,242 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:23,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:23,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1612289523, now seen corresponding path program 1 times [2020-11-29 23:59:23,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:23,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554292730] [2020-11-29 23:59:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:23,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:59:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:23,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:23,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554292730] [2020-11-29 23:59:23,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:23,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-29 23:59:23,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011047188] [2020-11-29 23:59:23,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:59:23,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:23,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:59:23,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:59:23,761 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2020-11-29 23:59:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:23,937 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 23:59:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:59:23,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-29 23:59:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:23,938 INFO L225 Difference]: With dead ends: 18 [2020-11-29 23:59:23,938 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:59:23,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:59:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:59:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:59:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:59:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:59:23,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-29 23:59:23,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:23,940 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:23,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:59:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:59:23,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:59:24,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 23:59:24,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:59:24,283 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-11-29 23:59:24,283 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:59:24,284 INFO L274 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-11-29 23:59:24,285 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 23:59:24,285 INFO L277 CegarLoopResult]: At program point L78(lines 61 79) the Hoare annotation is: true [2020-11-29 23:59:24,285 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-29 23:59:24,285 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:59:24,285 INFO L274 CegarLoopResult]: For program point L25(lines 25 49) no Hoare annotation was computed. [2020-11-29 23:59:24,285 INFO L274 CegarLoopResult]: For program point L50(lines 50 54) no Hoare annotation was computed. [2020-11-29 23:59:24,285 INFO L274 CegarLoopResult]: For program point L50-1(lines 15 56) no Hoare annotation was computed. [2020-11-29 23:59:24,286 INFO L274 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-11-29 23:59:24,286 INFO L274 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-11-29 23:59:24,286 INFO L274 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2020-11-29 23:59:24,286 INFO L270 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-29 23:59:24,286 INFO L274 CegarLoopResult]: For program point L26(lines 26 43) no Hoare annotation was computed. [2020-11-29 23:59:24,286 INFO L270 CegarLoopResult]: At program point L55(lines 15 56) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_ceil_float_#res| |ULTIMATE.start_ceil_float_#res|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x))) [2020-11-29 23:59:24,286 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-29 23:59:24,287 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_ceil_float_~x)) [2020-11-29 23:59:24,287 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-11-29 23:59:24,287 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-29 23:59:24,287 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-11-29 23:59:24,295 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,302 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,304 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,305 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,306 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,306 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:59:24 BoogieIcfgContainer [2020-11-29 23:59:24,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:59:24,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:59:24,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:59:24,310 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:59:24,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:59:21" (3/4) ... [2020-11-29 23:59:24,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:59:24,334 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 23:59:24,334 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 23:59:24,334 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:59:24,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:59:24,365 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-29 23:59:24,366 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-29 23:59:24,367 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-29 23:59:24,391 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6a983d15-2bc3-485f-af7c-9d851306468e/bin/uautomizer/witness.graphml [2020-11-29 23:59:24,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:59:24,393 INFO L168 Benchmark]: Toolchain (without parser) took 4988.95 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 51.3 MB in the beginning and 46.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:24,394 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:24,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.56 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 40.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:24,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.02 ms. Allocated memory is still 69.2 MB. Free memory was 40.3 MB in the beginning and 52.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:24,396 INFO L168 Benchmark]: Boogie Preprocessor took 41.33 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:24,397 INFO L168 Benchmark]: RCFGBuilder took 1118.20 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 33.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:24,398 INFO L168 Benchmark]: TraceAbstraction took 3255.63 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 33.0 MB in the beginning and 50.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:24,398 INFO L168 Benchmark]: Witness Printer took 81.89 ms. Allocated memory is still 92.3 MB. Free memory was 50.4 MB in the beginning and 46.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:24,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory is still 50.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.56 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 40.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 117.02 ms. Allocated memory is still 69.2 MB. Free memory was 40.3 MB in the beginning and 52.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.33 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1118.20 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 33.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3255.63 ms. Allocated memory was 69.2 MB in the beginning and 92.3 MB in the end (delta: 23.1 MB). Free memory was 33.0 MB in the beginning and 50.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 81.89 ms. Allocated memory is still 92.3 MB. Free memory was 50.4 MB in the beginning and 46.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2020-11-29 23:59:24,411 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,412 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant [2020-11-29 23:59:24,413 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,413 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 15]: Loop Invariant [2020-11-29 23:59:24,414 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 23:59:24,414 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 18 SDslu, 65 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 35 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 11 QuantifiedInterpolants, 2710 SizeOfPredicates, 19 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...