./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.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_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/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 92378978a89ae01e3bc9e388811319081868cc5d ........................................................................................................................................................................................................................................................................................ 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_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/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 92378978a89ae01e3bc9e388811319081868cc5d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:52,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:52,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:52,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:52,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:52,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:52,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:52,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:52,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:52,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:52,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:52,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:52,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:52,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:52,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:52,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:52,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:52,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:52,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:52,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:52,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:52,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:52,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:52,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:52,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:52,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:52,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:52,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:52,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:52,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:52,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:52,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:52,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:52,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:52,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:52,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:52,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:52,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:52,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:52,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:52,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:52,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:52,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:52,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:52,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:52,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:52,188 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:52,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:52,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:52,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:52,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:52,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:52,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:52,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:52,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:52,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:52,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:52,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:52,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:52,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:52,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:52,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:52,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:52,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:52,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:52,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:52,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:52,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:52,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:52,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:52,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:52,194 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_2cb855d1-e685-4143-9c66-92e738bc8de2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2020-11-28 03:16:52,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:52,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:52,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:52,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:52,506 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:52,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-28 03:16:52,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/3fea19a18/1f0a1cff00974fd0a3670f14fe784411/FLAG875fec0fb [2020-11-28 03:16:53,127 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:53,128 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-28 03:16:53,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/3fea19a18/1f0a1cff00974fd0a3670f14fe784411/FLAG875fec0fb [2020-11-28 03:16:53,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/3fea19a18/1f0a1cff00974fd0a3670f14fe784411 [2020-11-28 03:16:53,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:53,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:53,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:53,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:53,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:53,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f14abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53, skipping insertion in model container [2020-11-28 03:16:53,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:53,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:53,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:53,692 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:53,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:53,731 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:53,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53 WrapperNode [2020-11-28 03:16:53,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:53,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:53,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:53,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:53,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:53,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:53,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:53,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:53,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... [2020-11-28 03:16:53,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:53,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:53,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:53,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:53,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:53,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:16:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:16:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:16:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:16:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:16:54,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:54,289 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:16:54,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:54 BoogieIcfgContainer [2020-11-28 03:16:54,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:54,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:54,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:54,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:54,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:53" (1/3) ... [2020-11-28 03:16:54,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105eeb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:54, skipping insertion in model container [2020-11-28 03:16:54,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:53" (2/3) ... [2020-11-28 03:16:54,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105eeb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:54, skipping insertion in model container [2020-11-28 03:16:54,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:54" (3/3) ... [2020-11-28 03:16:54,300 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-11-28 03:16:54,312 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:54,317 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:16:54,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:16:54,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:54,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:54,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:54,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:54,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:54,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:54,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:54,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-28 03:16:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:16:54,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:54,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2020-11-28 03:16:54,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955384451] [2020-11-28 03:16:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:54,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955384451] [2020-11-28 03:16:54,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:54,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:54,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221949169] [2020-11-28 03:16:54,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:16:54,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:54,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:16:54,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:54,545 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-28 03:16:54,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,562 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-28 03:16:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:16:54,563 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:16:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,573 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:16:54,573 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:16:54,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:16:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:16:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:16:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-28 03:16:54,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-11-28 03:16:54,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,619 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-28 03:16:54,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:16:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-28 03:16:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:16:54,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:54,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:54,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2020-11-28 03:16:54,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708829068] [2020-11-28 03:16:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:54,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:54,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:54,753 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:54,753 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:16:54,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:54,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:16:54 BoogieIcfgContainer [2020-11-28 03:16:54,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:16:54,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:16:54,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:16:54,799 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:16:54,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:54" (3/4) ... [2020-11-28 03:16:54,803 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:16:54,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:16:54,807 INFO L168 Benchmark]: Toolchain (without parser) took 1346.38 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 74.9 MB in the beginning and 102.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:54,809 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory was 59.3 MB in the beginning and 59.3 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:54,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 73.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:54,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.97 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 71.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:54,812 INFO L168 Benchmark]: Boogie Preprocessor took 27.64 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:54,814 INFO L168 Benchmark]: RCFGBuilder took 491.09 ms. Allocated memory is still 96.5 MB. Free memory was 70.3 MB in the beginning and 54.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:16:54,814 INFO L168 Benchmark]: TraceAbstraction took 503.96 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 54.2 MB in the beginning and 102.9 MB in the end (delta: -48.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:54,816 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 132.1 MB. Free memory is still 102.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:16:54,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory was 59.3 MB in the beginning and 59.3 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 96.5 MB. Free memory was 74.6 MB in the beginning and 73.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.97 ms. Allocated memory is still 96.5 MB. Free memory was 73.1 MB in the beginning and 71.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.64 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 491.09 ms. Allocated memory is still 96.5 MB. Free memory was 70.3 MB in the beginning and 54.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 503.96 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 54.2 MB in the beginning and 102.9 MB in the end (delta: -48.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.43 ms. Allocated memory is still 132.1 MB. Free memory is still 102.9 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 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L68] float res = round_float(x); [L57] return x != x; [L71] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 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=22occurred 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, 0.0s 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 [2020-11-28 03:16:57,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:57,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:57,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:57,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:57,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:57,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:57,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:57,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:57,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:57,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:57,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:57,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:57,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:57,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:57,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:57,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:57,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:57,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:57,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:57,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:57,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:57,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:57,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:57,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:57,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:57,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:57,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:57,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:57,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:57,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:57,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:57,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:57,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:57,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:57,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:57,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:57,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:57,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:57,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:57,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:57,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:16:57,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:57,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:57,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:57,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:57,586 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:57,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:57,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:57,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:57,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:57,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:57,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:57,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:57,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:16:57,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:16:57,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:57,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:57,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:57,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:57,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:57,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:57,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:57,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:57,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:57,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:57,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:57,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:57,593 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:16:57,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:16:57,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:57,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:57,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:16:57,594 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_2cb855d1-e685-4143-9c66-92e738bc8de2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92378978a89ae01e3bc9e388811319081868cc5d [2020-11-28 03:16:58,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:58,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:58,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:58,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:58,064 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:58,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-28 03:16:58,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/d7d818862/c8bff2ef939b4953bfd60022f1b02747/FLAGcb52aee67 [2020-11-28 03:16:58,808 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:58,808 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/sv-benchmarks/c/float-newlib/float_req_bl_1031.c [2020-11-28 03:16:58,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/d7d818862/c8bff2ef939b4953bfd60022f1b02747/FLAGcb52aee67 [2020-11-28 03:16:59,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/data/d7d818862/c8bff2ef939b4953bfd60022f1b02747 [2020-11-28 03:16:59,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:59,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:59,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:59,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:59,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:59,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1326f366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59, skipping insertion in model container [2020-11-28 03:16:59,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:59,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:59,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:59,420 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:59,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:59,477 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:59,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59 WrapperNode [2020-11-28 03:16:59,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:59,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:59,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:59,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:59,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:59,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:59,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:59,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:59,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... [2020-11-28 03:16:59,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:59,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:59,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:59,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:59,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:59,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:16:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-28 03:16:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:16:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 03:16:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:16:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:00,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:00,317 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:17:00,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:00 BoogieIcfgContainer [2020-11-28 03:17:00,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:00,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:00,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:00,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:00,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:59" (1/3) ... [2020-11-28 03:17:00,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c361b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:00, skipping insertion in model container [2020-11-28 03:17:00,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:59" (2/3) ... [2020-11-28 03:17:00,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c361b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:00, skipping insertion in model container [2020-11-28 03:17:00,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:00" (3/3) ... [2020-11-28 03:17:00,328 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2020-11-28 03:17:00,341 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:00,346 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:17:00,359 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:17:00,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:00,395 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:17:00,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:00,398 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:00,398 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:00,398 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:00,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:00,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-28 03:17:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:17:00,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:00,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:00,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:00,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:00,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1590434411, now seen corresponding path program 1 times [2020-11-28 03:17:00,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:00,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680949322] [2020-11-28 03:17:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:17:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:00,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:17:00,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:00,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:00,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680949322] [2020-11-28 03:17:00,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:00,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:17:00,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272446549] [2020-11-28 03:17:00,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:17:00,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:00,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:17:00,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:17:00,622 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-11-28 03:17:00,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:00,640 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2020-11-28 03:17:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:17:00,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:17:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:00,652 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:17:00,653 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:17:00,656 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 [2020-11-28 03:17:00,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:17:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:17:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:17:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-11-28 03:17:00,696 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2020-11-28 03:17:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:00,696 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-11-28 03:17:00,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:17:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-11-28 03:17:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:17:00,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:00,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:00,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:17:00,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash -744872786, now seen corresponding path program 1 times [2020-11-28 03:17:00,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:00,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945237999] [2020-11-28 03:17:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:17:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:01,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:17:01,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:01,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:01,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945237999] [2020-11-28 03:17:01,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:01,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 03:17:01,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176744640] [2020-11-28 03:17:01,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:17:01,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:01,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:17:01,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:17:01,541 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 10 states. [2020-11-28 03:17:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:01,888 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-28 03:17:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:17:01,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-28 03:17:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:01,890 INFO L225 Difference]: With dead ends: 23 [2020-11-28 03:17:01,891 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:17:01,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:17:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:17:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:17:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:17:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 03:17:01,895 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2020-11-28 03:17:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:01,896 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 03:17:01,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:17:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 03:17:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:17:01,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:01,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:02,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:17:02,111 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:02,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:02,111 INFO L82 PathProgramCache]: Analyzing trace with hash 812423977, now seen corresponding path program 1 times [2020-11-28 03:17:02,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:17:02,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883352644] [2020-11-28 03:17:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/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 [2020-11-28 03:17:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:02,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:17:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:17:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:02,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:17:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:17:02,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883352644] [2020-11-28 03:17:02,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:02,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:17:02,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633558722] [2020-11-28 03:17:02,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:17:02,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:17:02,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:17:02,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:17:02,527 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 8 states. [2020-11-28 03:17:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:02,723 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-11-28 03:17:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:17:02,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 03:17:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:02,724 INFO L225 Difference]: With dead ends: 17 [2020-11-28 03:17:02,724 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:17:02,724 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 [2020-11-28 03:17:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:17:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:17:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:17:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:17:02,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 03:17:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:02,725 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:17:02,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:17:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:17:02,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:17:02,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:17:02,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:17:03,073 INFO L274 CegarLoopResult]: For program point L27(lines 27 40) no Hoare annotation was computed. [2020-11-28 03:17:03,073 INFO L274 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-11-28 03:17:03,073 INFO L274 CegarLoopResult]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2020-11-28 03:17:03,073 INFO L274 CegarLoopResult]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2020-11-28 03:17:03,074 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:17:03,074 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 03:17:03,074 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:17:03,074 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:17:03,074 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:17:03,074 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2020-11-28 03:17:03,074 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L270 CegarLoopResult]: At program point L53(lines 13 54) the Hoare annotation is: (and (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x) (= currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)) |ULTIMATE.start_round_float_#res|)) [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point L71(lines 71 74) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point L26(lines 26 47) no Hoare annotation was computed. [2020-11-28 03:17:03,075 INFO L274 CegarLoopResult]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2020-11-28 03:17:03,076 INFO L270 CegarLoopResult]: At program point L18-2(lines 18 22) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_round_float_~x))) [2020-11-28 03:17:03,076 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2020-11-28 03:17:03,076 INFO L277 CegarLoopResult]: At program point L76(lines 59 77) the Hoare annotation is: true [2020-11-28 03:17:03,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,091 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,091 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,091 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,091 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,092 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,092 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,094 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,094 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:03,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,095 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,095 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:03,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,096 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,097 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,098 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,099 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,099 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,099 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,100 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:03 BoogieIcfgContainer [2020-11-28 03:17:03,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:03,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:03,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:03,103 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:03,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:00" (3/4) ... [2020-11-28 03:17:03,107 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:17:03,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:17:03,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 03:17:03,119 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:17:03,119 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:17:03,158 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-11-28 03:17:03,158 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-28 03:17:03,159 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result [2020-11-28 03:17:03,191 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2cb855d1-e685-4143-9c66-92e738bc8de2/bin/uautomizer/witness.graphml [2020-11-28 03:17:03,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:03,194 INFO L168 Benchmark]: Toolchain (without parser) took 4020.00 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 53.1 MB in the beginning and 38.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:03,195 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:03,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.03 ms. Allocated memory is still 69.2 MB. Free memory was 52.8 MB in the beginning and 42.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:03,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.15 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 52.9 MB in the end (delta: -10.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:03,197 INFO L168 Benchmark]: Boogie Preprocessor took 57.50 ms. Allocated memory is still 69.2 MB. Free memory was 52.9 MB in the beginning and 51.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:03,198 INFO L168 Benchmark]: RCFGBuilder took 679.68 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 35.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:03,199 INFO L168 Benchmark]: TraceAbstraction took 2781.48 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 35.0 MB in the beginning and 41.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:03,199 INFO L168 Benchmark]: Witness Printer took 89.08 ms. Allocated memory is still 104.9 MB. Free memory was 41.0 MB in the beginning and 38.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:03,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.03 ms. Allocated memory is still 69.2 MB. Free memory was 52.8 MB in the beginning and 42.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.15 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 52.9 MB in the end (delta: -10.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.50 ms. Allocated memory is still 69.2 MB. Free memory was 52.9 MB in the beginning and 51.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 679.68 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 35.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2781.48 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 35.0 MB in the beginning and 41.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Witness Printer took 89.08 ms. Allocated memory is still 104.9 MB. Free memory was 41.0 MB in the beginning and 38.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * 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: 13]: Loop Invariant [2020-11-28 03:17:03,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,221 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,237 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,238 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,238 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,238 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,238 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - InvariantResult [Line: 18]: Loop Invariant [2020-11-28 03:17:03,240 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,240 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:03,240 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,241 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,241 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 03:17:03,241 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 57]: Loop Invariant [2020-11-28 03:17:03,242 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,242 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,242 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,243 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,243 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,243 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,244 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,244 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,244 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,245 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-28 03:17:03,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-28 03:17:03,245 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result) && ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 31 SDslu, 74 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 59 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 5 QuantifiedInterpolants, 3560 SizeOfPredicates, 17 NumberOfNonLiveVariables, 142 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...