./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.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_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/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 f841b6aef5f414fec53f63b7daa049c759482c9a ........................................................................................................................................................................................................................................................................................ 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_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c -s /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/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 f841b6aef5f414fec53f63b7daa049c759482c9a ................................................................................................................................................................................................................................................................................................................................................................ 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 20:12:15,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:12:15,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:12:15,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:12:15,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:12:15,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:12:15,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:12:15,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:12:15,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:12:15,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:12:15,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:12:15,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:12:15,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:12:15,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:12:15,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:12:15,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:12:15,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:12:15,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:12:15,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:12:15,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:12:15,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:12:15,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:12:15,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:12:15,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:12:15,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:12:15,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:12:15,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:12:15,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:12:15,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:12:15,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:12:15,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:12:15,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:12:15,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:12:15,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:12:15,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:12:15,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:12:15,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:12:15,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:12:15,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:12:15,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:12:15,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:12:15,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:12:15,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:12:15,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:12:15,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:12:15,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:12:15,669 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:12:15,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:12:15,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:12:15,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:12:15,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:12:15,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:12:15,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:12:15,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:12:15,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:12:15,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:12:15,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:12:15,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:12:15,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:12:15,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:12:15,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:12:15,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:12:15,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:12:15,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:12:15,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:12:15,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:12:15,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:12:15,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:12:15,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:12:15,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:12:15,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:12:15,678 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_196da487-9b01-4769-a127-ce3afe4f542d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-11-29 20:12:16,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:12:16,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:12:16,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:12:16,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:12:16,080 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:12:16,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-29 20:12:16,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/be96d86a8/3b38cea76c8b421db839c34934f6d10a/FLAG34f7b6997 [2020-11-29 20:12:16,701 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:12:16,702 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-29 20:12:16,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/be96d86a8/3b38cea76c8b421db839c34934f6d10a/FLAG34f7b6997 [2020-11-29 20:12:17,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/be96d86a8/3b38cea76c8b421db839c34934f6d10a [2020-11-29 20:12:17,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:12:17,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:12:17,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:12:17,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:12:17,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:12:17,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@356a6f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17, skipping insertion in model container [2020-11-29 20:12:17,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:12:17,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:12:17,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:12:17,409 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:12:17,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:12:17,451 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:12:17,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17 WrapperNode [2020-11-29 20:12:17,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:12:17,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:12:17,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:12:17,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:12:17,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:12:17,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:12:17,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:12:17,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:12:17,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... [2020-11-29 20:12:17,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:12:17,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:12:17,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:12:17,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:12:17,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/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 20:12:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:12:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:12:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 20:12:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:12:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 20:12:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:12:17,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:12:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:12:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:12:17,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:12:17,924 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 20:12:17,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:17 BoogieIcfgContainer [2020-11-29 20:12:17,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:12:17,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:12:17,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:12:17,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:12:17,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:12:17" (1/3) ... [2020-11-29 20:12:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ecc218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:12:17, skipping insertion in model container [2020-11-29 20:12:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:17" (2/3) ... [2020-11-29 20:12:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ecc218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:12:17, skipping insertion in model container [2020-11-29 20:12:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:17" (3/3) ... [2020-11-29 20:12:17,946 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-11-29 20:12:17,978 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:12:17,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:12:18,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:12:18,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:12:18,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:12:18,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:12:18,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:12:18,080 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:12:18,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:12:18,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:12:18,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:12:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 20:12:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:12:18,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:18,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:18,107 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:18,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:18,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-11-29 20:12:18,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:18,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757951595] [2020-11-29 20:12:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:18,310 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 20:12:18,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757951595] [2020-11-29 20:12:18,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:18,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:12:18,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243738188] [2020-11-29 20:12:18,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:12:18,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:18,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:12:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:12:18,338 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-29 20:12:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:18,355 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-29 20:12:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:12:18,356 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:12:18,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:18,365 INFO L225 Difference]: With dead ends: 29 [2020-11-29 20:12:18,366 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 20:12:18,375 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 20:12:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 20:12:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 20:12:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 20:12:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-29 20:12:18,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-11-29 20:12:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:18,413 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-29 20:12:18,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:12:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-29 20:12:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:12:18,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:18,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:18,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:12:18,415 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:18,416 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-11-29 20:12:18,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:18,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740924042] [2020-11-29 20:12:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:18,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:18,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:18,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:12:18,633 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:12:18,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:12:18,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:12:18 BoogieIcfgContainer [2020-11-29 20:12:18,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:12:18,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:12:18,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:12:18,670 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:12:18,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:17" (3/4) ... [2020-11-29 20:12:18,674 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:12:18,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:12:18,676 INFO L168 Benchmark]: Toolchain (without parser) took 1588.86 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 60.4 MB in the beginning and 98.7 MB in the end (delta: -38.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:18,677 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 50.4 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:18,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.47 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 68.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:18,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 90.2 MB. Free memory was 68.4 MB in the beginning and 67.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:18,680 INFO L168 Benchmark]: Boogie Preprocessor took 32.73 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 66.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:18,681 INFO L168 Benchmark]: RCFGBuilder took 401.69 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 52.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:18,682 INFO L168 Benchmark]: TraceAbstraction took 742.42 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 51.6 MB in the beginning and 99.3 MB in the end (delta: -47.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:18,682 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 123.7 MB. Free memory was 99.3 MB in the beginning and 98.7 MB in the end (delta: 597.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:18,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 50.4 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.47 ms. Allocated memory is still 90.2 MB. Free memory was 60.2 MB in the beginning and 68.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 90.2 MB. Free memory was 68.4 MB in the beginning and 67.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.73 ms. Allocated memory is still 90.2 MB. Free memory was 67.1 MB in the beginning and 66.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 401.69 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 52.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 742.42 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 51.6 MB in the beginning and 99.3 MB in the end (delta: -47.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 123.7 MB. Free memory was 99.3 MB in the beginning and 98.7 MB in the end (delta: 597.2 kB). Peak memory consumption was 2.1 MB. 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L17] __uint32_t ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; [L38] float res = fabs_float(x); [L14] return x != x; [L41] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1010.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 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: 14 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=16occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 20:12:21,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:12:21,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:12:21,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:12:21,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:12:21,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:12:21,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:12:21,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:12:21,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:12:21,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:12:21,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:12:21,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:12:21,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:12:21,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:12:21,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:12:21,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:12:21,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:12:21,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:12:21,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:12:21,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:12:21,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:12:21,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:12:21,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:12:21,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:12:21,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:12:21,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:12:21,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:12:21,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:12:21,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:12:21,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:12:21,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:12:21,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:12:21,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:12:21,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:12:21,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:12:21,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:12:21,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:12:21,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:12:21,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:12:21,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:12:21,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:12:21,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:12:21,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:12:21,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:12:21,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:12:21,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:12:21,562 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:12:21,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:12:21,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:12:21,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:12:21,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:12:21,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:12:21,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:12:21,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:12:21,565 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:12:21,566 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:12:21,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:12:21,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:12:21,566 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:12:21,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:12:21,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:12:21,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:12:21,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:12:21,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:12:21,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:12:21,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:12:21,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:12:21,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:12:21,569 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:12:21,569 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:12:21,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:12:21,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:12:21,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:12:21,570 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_196da487-9b01-4769-a127-ce3afe4f542d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f841b6aef5f414fec53f63b7daa049c759482c9a [2020-11-29 20:12:22,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:12:22,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:12:22,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:12:22,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:12:22,071 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:12:22,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-29 20:12:22,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/9165001eb/44141f5862e243439a46d52209de4469/FLAG2341aa3d9 [2020-11-29 20:12:22,771 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:12:22,772 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/sv-benchmarks/c/float-newlib/float_req_bl_1010.c [2020-11-29 20:12:22,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/9165001eb/44141f5862e243439a46d52209de4469/FLAG2341aa3d9 [2020-11-29 20:12:23,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/data/9165001eb/44141f5862e243439a46d52209de4469 [2020-11-29 20:12:23,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:12:23,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:12:23,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:12:23,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:12:23,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:12:23,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a8eaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23, skipping insertion in model container [2020-11-29 20:12:23,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:12:23,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:12:23,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:12:23,349 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:12:23,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:12:23,388 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:12:23,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23 WrapperNode [2020-11-29 20:12:23,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:12:23,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:12:23,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:12:23,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:12:23,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:12:23,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:12:23,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:12:23,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:12:23,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... [2020-11-29 20:12:23,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:12:23,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:12:23,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:12:23,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:12:23,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/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 20:12:23,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:12:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:12:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 20:12:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:12:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:12:23,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:12:23,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 20:12:23,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:12:23,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:12:24,123 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:12:24,124 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 20:12:24,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:24 BoogieIcfgContainer [2020-11-29 20:12:24,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:12:24,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:12:24,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:12:24,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:12:24,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:12:23" (1/3) ... [2020-11-29 20:12:24,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529c2c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:12:24, skipping insertion in model container [2020-11-29 20:12:24,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:12:23" (2/3) ... [2020-11-29 20:12:24,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529c2c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:12:24, skipping insertion in model container [2020-11-29 20:12:24,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:24" (3/3) ... [2020-11-29 20:12:24,138 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-11-29 20:12:24,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:12:24,158 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:12:24,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:12:24,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:12:24,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:12:24,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:12:24,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:12:24,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:12:24,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:12:24,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:12:24,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:12:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-29 20:12:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:12:24,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:24,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:24,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:24,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1641238961, now seen corresponding path program 1 times [2020-11-29 20:12:24,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:12:24,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984538506] [2020-11-29 20:12:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/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 20:12:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:12:24,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:24,448 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 20:12:24,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:12:24,452 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 20:12:24,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984538506] [2020-11-29 20:12:24,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:24,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:12:24,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082423570] [2020-11-29 20:12:24,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:12:24,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:12:24,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:12:24,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:12:24,476 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-29 20:12:24,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:24,495 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-11-29 20:12:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:12:24,496 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 20:12:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:24,506 INFO L225 Difference]: With dead ends: 29 [2020-11-29 20:12:24,506 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 20:12:24,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 20:12:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 20:12:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 20:12:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 20:12:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-11-29 20:12:24,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 9 [2020-11-29 20:12:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:24,546 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-11-29 20:12:24,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:12:24,546 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-11-29 20:12:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:12:24,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:24,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:24,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:12:24,764 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash 558246130, now seen corresponding path program 1 times [2020-11-29 20:12:24,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:12:24,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986882635] [2020-11-29 20:12:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/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 20:12:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:24,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 20:12:24,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:25,229 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 20:12:25,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:12:25,469 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 20:12:25,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986882635] [2020-11-29 20:12:25,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:12:25,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-29 20:12:25,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604808744] [2020-11-29 20:12:25,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:12:25,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:12:25,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:12:25,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:12:25,474 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 12 states. [2020-11-29 20:12:26,025 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2020-11-29 20:12:26,203 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-29 20:12:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:26,206 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-11-29 20:12:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:12:26,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2020-11-29 20:12:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:26,206 INFO L225 Difference]: With dead ends: 12 [2020-11-29 20:12:26,207 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:12:26,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:12:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:12:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:12:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:12:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:12:26,209 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-11-29 20:12:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:26,210 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:12:26,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:12:26,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:12:26,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:12:26,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:12:26,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:12:26,566 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:12:26,566 INFO L274 CegarLoopResult]: For program point L23(lines 23 27) no Hoare annotation was computed. [2020-11-29 20:12:26,567 INFO L274 CegarLoopResult]: For program point L23-1(lines 16 29) no Hoare annotation was computed. [2020-11-29 20:12:26,567 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 27) no Hoare annotation was computed. [2020-11-29 20:12:26,567 INFO L277 CegarLoopResult]: At program point L46(lines 31 47) the Hoare annotation is: true [2020-11-29 20:12:26,567 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 20:12:26,567 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 20:12:26,568 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:12:26,568 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:12:26,568 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:12:26,568 INFO L270 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-11-29 20:12:26,568 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 20:12:26,568 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-29 20:12:26,569 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (not (fp.eq ULTIMATE.start_fabs_float_~x ULTIMATE.start_fabs_float_~x)) [2020-11-29 20:12:26,569 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_fabs_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (let ((.cse0 (let ((.cse1 (bvand (_ bv2147483647 32) ULTIMATE.start_fabs_float_~ix~0))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (fp.eq .cse0 .cse0))) (not (fp.eq |ULTIMATE.start_fabs_float_#res| |ULTIMATE.start_fabs_float_#res|))) [2020-11-29 20:12:26,569 INFO L274 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-11-29 20:12:26,589 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 20:12:26,595 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 20:12:26,601 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 20:12:26,606 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 20:12:26,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:12:26 BoogieIcfgContainer [2020-11-29 20:12:26,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:12:26,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:12:26,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:12:26,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:12:26,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:12:24" (3/4) ... [2020-11-29 20:12:26,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:12:26,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 20:12:26,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:12:26,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 20:12:26,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:12:26,685 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_196da487-9b01-4769-a127-ce3afe4f542d/bin/uautomizer/witness.graphml [2020-11-29 20:12:26,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:12:26,692 INFO L168 Benchmark]: Toolchain (without parser) took 3545.44 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 45.6 MB in the beginning and 66.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:26,693 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:26,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.11 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 35.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:26,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.56 ms. Allocated memory is still 65.0 MB. Free memory was 35.1 MB in the beginning and 48.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:26,697 INFO L168 Benchmark]: Boogie Preprocessor took 30.83 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:26,698 INFO L168 Benchmark]: RCFGBuilder took 624.98 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 33.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:26,699 INFO L168 Benchmark]: TraceAbstraction took 2481.96 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 32.7 MB in the beginning and 68.2 MB in the end (delta: -35.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:26,701 INFO L168 Benchmark]: Witness Printer took 75.22 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 66.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:26,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.11 ms. Allocated memory is still 65.0 MB. Free memory was 45.4 MB in the beginning and 35.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.56 ms. Allocated memory is still 65.0 MB. Free memory was 35.1 MB in the beginning and 48.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.83 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 47.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 624.98 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 33.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2481.96 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 32.7 MB in the beginning and 68.2 MB in the end (delta: -35.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 75.22 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 66.1 MB in the end (delta: 2.1 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] * 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 Derived loop invariant: !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 16]: Loop Invariant [2020-11-29 20:12:26,721 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 20:12:26,721 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) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 14]: Loop Invariant [2020-11-29 20:12:26,734 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 20:12:26,735 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) && 1bv32 == \result) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]), ~fp~LONGDOUBLE(~bvand32(2147483647bv32, ix)[31:31], ~bvand32(2147483647bv32, ix)[30:23], ~bvand32(2147483647bv32, ix)[22:0]))) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 88 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 6 QuantifiedInterpolants, 1568 SizeOfPredicates, 13 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...