./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.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_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/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 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 ........................................................................................................................................................................................................................................................................................................ 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_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/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 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:58:46,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:46,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:47,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:47,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:47,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:47,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:47,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:47,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:47,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:47,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:47,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:47,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:47,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:47,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:47,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:47,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:47,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:47,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:47,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:47,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:47,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:47,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:47,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:47,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:47,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:47,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:47,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:47,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:47,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:47,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:47,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:47,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:47,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:47,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:47,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:47,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:47,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:47,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:47,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:47,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:47,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:58:47,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:47,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:47,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:47,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:47,191 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:47,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:47,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:47,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:47,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:47,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:47,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:47,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:47,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:47,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:47,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:47,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:47,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:47,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:47,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:47,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:47,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:47,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:47,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:47,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:47,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:47,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:47,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:58:47,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:47,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:47,200 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_f0381b5f-d163-439c-817f-bc28c065d66d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-11-29 23:58:47,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:47,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:47,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:47,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:47,572 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:47,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-11-29 23:58:47,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/5be0b77fa/7667642ad2b44350ba1e525b7493abf3/FLAGdf8a68efb [2020-11-29 23:58:48,300 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:48,301 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-11-29 23:58:48,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/5be0b77fa/7667642ad2b44350ba1e525b7493abf3/FLAGdf8a68efb [2020-11-29 23:58:48,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/5be0b77fa/7667642ad2b44350ba1e525b7493abf3 [2020-11-29 23:58:48,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:48,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:48,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:48,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:48,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:48,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:48" (1/1) ... [2020-11-29 23:58:48,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cac7301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:48, skipping insertion in model container [2020-11-29 23:58:48,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:48" (1/1) ... [2020-11-29 23:58:48,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:48,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:48,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:48,964 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:49,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:49,020 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:49,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49 WrapperNode [2020-11-29 23:58:49,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:49,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:49,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:49,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:49,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:49,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:49,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:49,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:49,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... [2020-11-29 23:58:49,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:49,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:49,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:49,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:49,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:49,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:49,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:49,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:58:49,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 23:58:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 23:58:49,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:49,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:49,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:58:49,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 23:58:49,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:58:50,119 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:50,119 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-29 23:58:50,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:50 BoogieIcfgContainer [2020-11-29 23:58:50,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:50,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:50,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:50,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:50,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:48" (1/3) ... [2020-11-29 23:58:50,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780661ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:50, skipping insertion in model container [2020-11-29 23:58:50,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:49" (2/3) ... [2020-11-29 23:58:50,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780661ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:50, skipping insertion in model container [2020-11-29 23:58:50,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:50" (3/3) ... [2020-11-29 23:58:50,134 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-11-29 23:58:50,148 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:50,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:58:50,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:58:50,220 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:50,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:50,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:50,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:50,221 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:50,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:50,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:50,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:50,242 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 23:58:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:58:50,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:50,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:50,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:50,259 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-11-29 23:58:50,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:50,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911258598] [2020-11-29 23:58:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:50,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911258598] [2020-11-29 23:58:50,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:50,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:50,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036344302] [2020-11-29 23:58:50,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:58:50,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:58:50,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:50,536 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 23:58:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:50,565 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-11-29 23:58:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:58:50,567 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 23:58:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:50,580 INFO L225 Difference]: With dead ends: 83 [2020-11-29 23:58:50,581 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:58:50,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:58:50,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 23:58:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:58:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-11-29 23:58:50,642 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-11-29 23:58:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:50,642 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-11-29 23:58:50,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:58:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-11-29 23:58:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:58:50,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:50,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:50,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:58:50,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-11-29 23:58:50,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:50,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808557237] [2020-11-29 23:58:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:50,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:50,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:50,932 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:50,932 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:58:50,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:58:50,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:50 BoogieIcfgContainer [2020-11-29 23:58:50,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:58:50,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:50,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:50,975 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:50,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:50" (3/4) ... [2020-11-29 23:58:50,980 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:58:50,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:50,983 INFO L168 Benchmark]: Toolchain (without parser) took 2346.53 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.8 MB in the beginning and 77.7 MB in the end (delta: -2.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:50,983 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 102.8 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:50,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.52 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 77.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:50,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.92 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 75.7 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:50,986 INFO L168 Benchmark]: Boogie Preprocessor took 44.59 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:50,987 INFO L168 Benchmark]: RCFGBuilder took 965.19 ms. Allocated memory is still 102.8 MB. Free memory was 74.1 MB in the beginning and 50.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:50,988 INFO L168 Benchmark]: TraceAbstraction took 849.63 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 49.8 MB in the beginning and 78.3 MB in the end (delta: -28.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:50,989 INFO L168 Benchmark]: Witness Printer took 5.64 ms. Allocated memory is still 123.7 MB. Free memory was 78.3 MB in the beginning and 77.7 MB in the end (delta: 594.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:50,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 102.8 MB. Free memory is still 62.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.52 ms. Allocated memory is still 102.8 MB. Free memory was 74.8 MB in the beginning and 77.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.92 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 75.7 MB in the end (delta: 2.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.59 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 965.19 ms. Allocated memory is still 102.8 MB. Free memory was 74.1 MB in the beginning and 50.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 849.63 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 49.8 MB in the beginning and 78.3 MB in the end (delta: -28.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.64 ms. Allocated memory is still 123.7 MB. Free memory was 78.3 MB in the beginning and 77.7 MB in the end (delta: 594.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L121] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L124] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:58:54,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:54,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:54,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:54,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:54,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:54,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:54,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:54,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:54,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:54,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:54,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:54,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:54,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:54,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:54,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:54,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:54,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:54,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:54,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:54,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:54,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:54,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:54,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:54,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:54,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:54,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:54,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:54,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:54,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:54,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:54,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:54,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:54,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:54,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:54,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:54,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:54,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:54,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:54,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:54,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:54,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:58:54,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:54,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:54,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:54,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:54,472 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:54,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:54,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:54,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:54,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:54,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:54,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:54,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:54,476 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:58:54,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:58:54,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:54,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:54,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:54,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:54,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:54,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:54,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:54,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:54,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:54,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:54,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:54,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:54,481 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:58:54,481 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:58:54,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:54,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:54,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:58:54,483 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_f0381b5f-d163-439c-817f-bc28c065d66d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-11-29 23:58:55,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:55,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:55,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:55,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:55,041 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:55,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-11-29 23:58:55,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/5350d8683/ac46c72aebd241439799a5dcd624dbd4/FLAG3521abfcc [2020-11-29 23:58:55,820 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:55,821 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-11-29 23:58:55,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/5350d8683/ac46c72aebd241439799a5dcd624dbd4/FLAG3521abfcc [2020-11-29 23:58:56,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/data/5350d8683/ac46c72aebd241439799a5dcd624dbd4 [2020-11-29 23:58:56,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:56,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:56,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:56,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:56,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:56,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fbdb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56, skipping insertion in model container [2020-11-29 23:58:56,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:56,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:56,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:56,611 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:56,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:56,696 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:56,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56 WrapperNode [2020-11-29 23:58:56,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:56,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:56,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:56,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:56,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:56,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:56,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:56,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:56,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... [2020-11-29 23:58:56,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:56,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:56,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:56,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:56,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-29 23:58:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:58:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-29 23:58:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 23:58:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:56,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 23:58:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 23:58:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:58:59,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:59,129 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-29 23:58:59,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:59 BoogieIcfgContainer [2020-11-29 23:58:59,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:59,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:59,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:59,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:59,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:56" (1/3) ... [2020-11-29 23:58:59,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63419253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:59, skipping insertion in model container [2020-11-29 23:58:59,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:56" (2/3) ... [2020-11-29 23:58:59,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63419253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:59, skipping insertion in model container [2020-11-29 23:58:59,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:59" (3/3) ... [2020-11-29 23:58:59,151 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-11-29 23:58:59,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:59,173 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:58:59,189 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:58:59,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:59,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:59,223 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:59,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:59,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:59,223 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:59,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:59,224 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 23:58:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:58:59,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:59,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:59,251 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-11-29 23:58:59,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:58:59,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329776297] [2020-11-29 23:58:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 23:58:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:59,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:58:59,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:59,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:58:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:59,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329776297] [2020-11-29 23:58:59,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:59,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:58:59,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195701870] [2020-11-29 23:58:59,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:58:59,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:58:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:58:59,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:59,726 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 23:58:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:59,753 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-11-29 23:58:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:58:59,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 23:58:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:59,767 INFO L225 Difference]: With dead ends: 83 [2020-11-29 23:58:59,767 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:58:59,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:58:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 23:58:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:58:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-11-29 23:58:59,813 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-11-29 23:58:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:59,814 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-11-29 23:58:59,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:58:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-11-29 23:58:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:58:59,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:59,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:00,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:59:00,032 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:00,033 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-11-29 23:59:00,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:00,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263236148] [2020-11-29 23:59:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:00,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:59:00,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:02,866 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 23:59:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:04,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:08,755 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-29 23:59:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:09,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263236148] [2020-11-29 23:59:09,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:09,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-29 23:59:09,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662401104] [2020-11-29 23:59:09,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 23:59:09,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 23:59:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2020-11-29 23:59:09,042 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2020-11-29 23:59:11,535 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_fmod_float_~y (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_float_~x c_ULTIMATE.start_fmod_float_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0))))) is different from true [2020-11-29 23:59:18,977 WARN L193 SmtUtils]: Spent 3.73 s on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-11-29 23:59:23,069 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-11-29 23:59:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:23,432 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-29 23:59:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:59:23,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-11-29 23:59:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:23,434 INFO L225 Difference]: With dead ends: 44 [2020-11-29 23:59:23,434 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:59:23,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2020-11-29 23:59:23,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:59:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 23:59:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:59:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-11-29 23:59:23,444 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2020-11-29 23:59:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:23,445 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-11-29 23:59:23,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 23:59:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-29 23:59:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:59:23,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:23,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:23,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:59:23,647 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:23,648 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2020-11-29 23:59:23,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:59:23,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072054579] [2020-11-29 23:59:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 23:59:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:23,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 23:59:23,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:23,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:59:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:23,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072054579] [2020-11-29 23:59:23,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:23,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2020-11-29 23:59:23,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413570315] [2020-11-29 23:59:23,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:59:23,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:59:23,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:59:23,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:59:23,913 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 6 states. [2020-11-29 23:59:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:23,964 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-11-29 23:59:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:59:23,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 23:59:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:23,967 INFO L225 Difference]: With dead ends: 39 [2020-11-29 23:59:23,967 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:59:23,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:59:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:59:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:59:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:59:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:59:23,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-29 23:59:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:23,973 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:59:23,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:59:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:59:23,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:59:24,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 23:59:24,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:59:25,536 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 23:59:30,192 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2020-11-29 23:59:30,195 INFO L274 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-11-29 23:59:30,196 INFO L274 CegarLoopResult]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2020-11-29 23:59:30,196 INFO L274 CegarLoopResult]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 23:59:30,196 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2020-11-29 23:59:30,196 INFO L270 CegarLoopResult]: At program point L110(line 110) the Hoare annotation is: (and (exists ((ULTIMATE.start_fmod_float_~x (_ FloatingPoint 8 24))) (= |ULTIMATE.start_fmod_float_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_float_~x (_ +zero 8 24)))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2020-11-29 23:59:30,197 INFO L274 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-11-29 23:59:30,197 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-11-29 23:59:30,197 INFO L270 CegarLoopResult]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2020-11-29 23:59:30,197 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 23:59:30,197 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 23:59:30,197 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:59:30,197 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:59:30,198 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-11-29 23:59:30,198 INFO L274 CegarLoopResult]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2020-11-29 23:59:30,198 INFO L274 CegarLoopResult]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 23:59:30,198 INFO L274 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-29 23:59:30,198 INFO L277 CegarLoopResult]: At program point L129(lines 112 130) the Hoare annotation is: true [2020-11-29 23:59:30,198 INFO L274 CegarLoopResult]: For program point L88(lines 88 105) no Hoare annotation was computed. [2020-11-29 23:59:30,198 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-11-29 23:59:30,199 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmod_float_~y (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2020-11-29 23:59:30,199 INFO L274 CegarLoopResult]: For program point L72(lines 72 73) no Hoare annotation was computed. [2020-11-29 23:59:30,199 INFO L274 CegarLoopResult]: For program point L48(lines 19 107) no Hoare annotation was computed. [2020-11-29 23:59:30,199 INFO L270 CegarLoopResult]: At program point L106(lines 19 107) the Hoare annotation is: (not (fp.eq |ULTIMATE.start_fmod_float_#res| |ULTIMATE.start_fmod_float_#res|)) [2020-11-29 23:59:30,199 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-29 23:59:30,199 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:59:30,199 INFO L274 CegarLoopResult]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2020-11-29 23:59:30,200 INFO L270 CegarLoopResult]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2020-11-29 23:59:30,200 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 23:59:30,200 INFO L274 CegarLoopResult]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2020-11-29 23:59:30,200 INFO L270 CegarLoopResult]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2020-11-29 23:59:30,200 INFO L274 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-11-29 23:59:30,200 INFO L270 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-11-29 23:59:30,200 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L274 CegarLoopResult]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L274 CegarLoopResult]: For program point L124(lines 124 127) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L274 CegarLoopResult]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L274 CegarLoopResult]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L274 CegarLoopResult]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2020-11-29 23:59:30,201 INFO L270 CegarLoopResult]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2020-11-29 23:59:30,202 INFO L274 CegarLoopResult]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2020-11-29 23:59:30,202 INFO L274 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-11-29 23:59:30,202 INFO L270 CegarLoopResult]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2020-11-29 23:59:30,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,222 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,222 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,222 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,224 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,227 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 23:59:30,228 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,229 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 23:59:30,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:59:30 BoogieIcfgContainer [2020-11-29 23:59:30,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:59:30,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:59:30,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:59:30,233 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:59:30,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:59" (3/4) ... [2020-11-29 23:59:30,238 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:59:30,254 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 23:59:30,254 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 23:59:30,254 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:59:30,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:59:30,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f0381b5f-d163-439c-817f-bc28c065d66d/bin/uautomizer/witness.graphml [2020-11-29 23:59:30,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:59:30,305 INFO L168 Benchmark]: Toolchain (without parser) took 34118.43 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 39.3 MB in the beginning and 50.6 MB in the end (delta: -11.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,306 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 42.2 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:59:30,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.37 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 41.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.30 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 39.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,308 INFO L168 Benchmark]: Boogie Preprocessor took 51.96 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 37.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,309 INFO L168 Benchmark]: RCFGBuilder took 2306.38 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 27.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,310 INFO L168 Benchmark]: TraceAbstraction took 31089.62 ms. Allocated memory is still 75.5 MB. Free memory was 57.5 MB in the beginning and 53.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,311 INFO L168 Benchmark]: Witness Printer took 71.38 ms. Allocated memory is still 75.5 MB. Free memory was 53.1 MB in the beginning and 50.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:59:30,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory was 42.2 MB in the beginning and 42.2 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 510.37 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 41.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.30 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 39.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.96 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 37.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2306.38 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 27.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31089.62 ms. Allocated memory is still 75.5 MB. Free memory was 57.5 MB in the beginning and 53.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 71.38 ms. Allocated memory is still 75.5 MB. Free memory was 53.1 MB in the beginning and 50.6 MB in the end (delta: 2.6 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,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[ULTIMATE.start_fmod_float_~x,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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,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[ULTIMATE.start_fmod_float_~x,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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - 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: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 110]: Loop Invariant [2020-11-29 23:59:30,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,328 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,329 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,329 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,329 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,330 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,330 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,330 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-11-29 23:59:30,331 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,331 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] Derived loop invariant: (\exists ULTIMATE.start_fmod_float_~x : C_FLOAT :: \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~Pluszero~LONGDOUBLE()), ~fp.mul~FLOAT(~roundNearestTiesToEven, ULTIMATE.start_fmod_float_~x, ~Pluszero~LONGDOUBLE()))) && 1bv32 == \result - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2020-11-29 23:59:30,332 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 23:59:30,332 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 23:59:30,333 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: y == ~Pluszero~LONGDOUBLE() && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 6 SDslu, 263 SDs, 0 SdLazy, 28 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 35 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 5.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 10 QuantifiedInterpolants, 4565 SizeOfPredicates, 16 NumberOfNonLiveVariables, 196 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...