./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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 0.2.0-69874e2 [2020-12-01 15:54:17,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:54:17,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:54:17,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:54:17,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:54:17,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:54:17,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:54:17,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:54:17,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:54:17,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:54:17,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:54:17,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:54:17,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:54:17,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:54:17,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:54:17,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:54:17,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:54:17,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:54:17,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:54:17,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:54:17,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:54:17,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:54:17,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:54:17,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:54:17,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:54:17,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:54:17,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:54:17,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:54:17,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:54:17,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:54:17,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:54:17,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:54:17,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:54:17,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:54:17,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:54:17,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:54:17,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:54:17,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:54:17,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:54:17,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:54:17,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:54:17,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:54:17,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:54:17,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:54:17,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:54:17,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:54:17,406 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:54:17,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:54:17,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:54:17,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:54:17,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:54:17,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:54:17,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:54:17,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:54:17,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:54:17,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:54:17,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:54:17,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:54:17,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:54:17,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:54:17,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:54:17,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:54:17,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:54:17,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:54:17,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:54:17,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:54:17,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:54:17,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:54:17,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:54:17,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:54:17,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:54:17,411 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_e9f1c980-e386-4b9d-a40c-afb33a915387/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-12-01 15:54:17,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:54:17,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:54:17,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:54:17,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:54:17,765 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:54:17,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-12-01 15:54:17,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/9a7446524/1ecf08d2d96840b3905909bcda2d05f9/FLAG53698ea06 [2020-12-01 15:54:18,313 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:54:18,314 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-12-01 15:54:18,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/9a7446524/1ecf08d2d96840b3905909bcda2d05f9/FLAG53698ea06 [2020-12-01 15:54:18,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/9a7446524/1ecf08d2d96840b3905909bcda2d05f9 [2020-12-01 15:54:18,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:54:18,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:54:18,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:18,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:54:18,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:54:18,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:18" (1/1) ... [2020-12-01 15:54:18,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24239c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:18, skipping insertion in model container [2020-12-01 15:54:18,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:18" (1/1) ... [2020-12-01 15:54:18,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:54:18,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:54:19,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:19,150 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:54:19,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:19,208 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:54:19,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19 WrapperNode [2020-12-01 15:54:19,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:19,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:19,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:54:19,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:54:19,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:19,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:54:19,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:54:19,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:54:19,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... [2020-12-01 15:54:19,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:54:19,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:54:19,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:54:19,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:54:19,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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 [2020-12-01 15:54:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:54:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:54:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:54:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 15:54:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 15:54:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:54:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:54:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:54:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-01 15:54:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:54:19,797 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:54:19,798 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 15:54:19,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:19 BoogieIcfgContainer [2020-12-01 15:54:19,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:54:19,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:54:19,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:54:19,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:54:19,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:54:18" (1/3) ... [2020-12-01 15:54:19,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ac22ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:19, skipping insertion in model container [2020-12-01 15:54:19,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:19" (2/3) ... [2020-12-01 15:54:19,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ac22ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:19, skipping insertion in model container [2020-12-01 15:54:19,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:19" (3/3) ... [2020-12-01 15:54:19,822 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-12-01 15:54:19,835 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:54:19,838 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:54:19,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:54:19,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:54:19,876 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:54:19,877 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:54:19,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:54:19,877 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:54:19,877 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:54:19,877 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:54:19,877 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:54:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-01 15:54:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:54:19,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:19,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:19,899 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:19,905 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-12-01 15:54:19,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:19,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275736050] [2020-12-01 15:54:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:20,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275736050] [2020-12-01 15:54:20,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:20,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:54:20,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513432022] [2020-12-01 15:54:20,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:54:20,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:54:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:54:20,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:54:20,086 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-01 15:54:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:20,106 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-12-01 15:54:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:54:20,108 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:54:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:20,118 INFO L225 Difference]: With dead ends: 83 [2020-12-01 15:54:20,118 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:54:20,121 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 [2020-12-01 15:54:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:54:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-01 15:54:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:54:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-12-01 15:54:20,195 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-12-01 15:54:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:20,196 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-12-01 15:54:20,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:54:20,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-12-01 15:54:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:54:20,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:20,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:20,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:54:20,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-12-01 15:54:20,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:54:20,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237701862] [2020-12-01 15:54:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:54:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:54:20,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:54:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:54:20,338 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:54:20,366 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:54:20,366 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:54:20,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:54:20,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:54:20 BoogieIcfgContainer [2020-12-01 15:54:20,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:54:20,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:54:20,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:54:20,405 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:54:20,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:19" (3/4) ... [2020-12-01 15:54:20,409 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:54:20,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:54:20,413 INFO L168 Benchmark]: Toolchain (without parser) took 1553.75 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 66.5 MB in the end (delta: 919.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:20,414 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 77.6 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:20,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.16 ms. Allocated memory is still 100.7 MB. Free memory was 67.2 MB in the beginning and 75.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:20,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.72 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 73.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:20,418 INFO L168 Benchmark]: Boogie Preprocessor took 31.60 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 71.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:20,419 INFO L168 Benchmark]: RCFGBuilder took 489.40 ms. Allocated memory is still 100.7 MB. Free memory was 71.7 MB in the beginning and 47.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:20,420 INFO L168 Benchmark]: TraceAbstraction took 602.09 ms. Allocated memory is still 100.7 MB. Free memory was 47.0 MB in the beginning and 67.1 MB in the end (delta: -20.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:20,420 INFO L168 Benchmark]: Witness Printer took 4.58 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 66.5 MB in the end (delta: 568.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:20,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 77.6 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.16 ms. Allocated memory is still 100.7 MB. Free memory was 67.2 MB in the beginning and 75.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.72 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 73.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.60 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 71.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.40 ms. Allocated memory is still 100.7 MB. Free memory was 71.7 MB in the beginning and 47.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 602.09 ms. Allocated memory is still 100.7 MB. Free memory was 47.0 MB in the beginning and 67.1 MB in the end (delta: -20.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.58 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 66.5 MB in the end (delta: 568.6 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: 0.4s, 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, 0.0s 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 0.2.0-69874e2 [2020-12-01 15:54:22,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:54:22,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:54:23,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:54:23,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:54:23,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:54:23,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:54:23,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:54:23,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:54:23,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:54:23,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:54:23,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:54:23,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:54:23,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:54:23,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:54:23,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:54:23,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:54:23,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:54:23,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:54:23,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:54:23,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:54:23,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:54:23,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:54:23,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:54:23,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:54:23,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:54:23,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:54:23,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:54:23,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:54:23,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:54:23,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:54:23,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:54:23,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:54:23,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:54:23,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:54:23,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:54:23,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:54:23,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:54:23,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:54:23,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:54:23,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:54:23,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:54:23,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:54:23,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:54:23,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:54:23,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:54:23,179 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:54:23,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:54:23,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:54:23,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:54:23,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:54:23,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:54:23,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:54:23,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:54:23,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:54:23,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:54:23,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:54:23,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:54:23,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:54:23,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:54:23,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:54:23,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:54:23,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:54:23,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:54:23,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:54:23,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:54:23,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:54:23,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:54:23,185 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:54:23,185 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:54:23,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:54:23,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:54:23,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:54:23,186 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_e9f1c980-e386-4b9d-a40c-afb33a915387/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d4c43a5e99017d570432216c5fcf66eb1ad9ac2 [2020-12-01 15:54:23,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:54:23,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:54:23,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:54:23,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:54:23,634 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:54:23,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-12-01 15:54:23,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/b0429d94d/48166751366d452084654aaa14ad35fa/FLAG54dae2fd2 [2020-12-01 15:54:24,301 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:54:24,302 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2020-12-01 15:54:24,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/b0429d94d/48166751366d452084654aaa14ad35fa/FLAG54dae2fd2 [2020-12-01 15:54:24,690 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/data/b0429d94d/48166751366d452084654aaa14ad35fa [2020-12-01 15:54:24,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:54:24,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:54:24,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:24,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:54:24,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:54:24,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:24" (1/1) ... [2020-12-01 15:54:24,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354f6fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:24, skipping insertion in model container [2020-12-01 15:54:24,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:54:24" (1/1) ... [2020-12-01 15:54:24,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:54:24,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:54:24,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:24,935 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:54:25,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:54:25,036 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:54:25,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25 WrapperNode [2020-12-01 15:54:25,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:54:25,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:25,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:54:25,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:54:25,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:54:25,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:54:25,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:54:25,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:54:25,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... [2020-12-01 15:54:25,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:54:25,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:54:25,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:54:25,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:54:25,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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 [2020-12-01 15:54:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-12-01 15:54:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:54:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:54:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-01 15:54:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:54:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:54:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:54:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-01 15:54:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 15:54:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:54:28,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:54:28,098 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-01 15:54:28,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:28 BoogieIcfgContainer [2020-12-01 15:54:28,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:54:28,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:54:28,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:54:28,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:54:28,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:54:24" (1/3) ... [2020-12-01 15:54:28,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b499ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:28, skipping insertion in model container [2020-12-01 15:54:28,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:54:25" (2/3) ... [2020-12-01 15:54:28,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b499ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:54:28, skipping insertion in model container [2020-12-01 15:54:28,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:28" (3/3) ... [2020-12-01 15:54:28,108 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2020-12-01 15:54:28,122 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:54:28,126 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:54:28,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:54:28,185 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:54:28,185 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:54:28,185 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:54:28,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:54:28,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:54:28,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:54:28,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:54:28,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:54:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-01 15:54:28,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:54:28,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:28,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:28,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash 666555284, now seen corresponding path program 1 times [2020-12-01 15:54:28,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:54:28,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923819638] [2020-12-01 15:54:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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 [2020-12-01 15:54:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:54:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:54:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:28,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:54:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:28,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923819638] [2020-12-01 15:54:28,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:28,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:54:28,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586107791] [2020-12-01 15:54:28,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:54:28,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:54:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:54:28,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:54:28,760 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-01 15:54:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:28,797 INFO L93 Difference]: Finished difference Result 83 states and 139 transitions. [2020-12-01 15:54:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:54:28,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:54:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:28,812 INFO L225 Difference]: With dead ends: 83 [2020-12-01 15:54:28,812 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:54:28,816 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 [2020-12-01 15:54:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:54:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-01 15:54:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:54:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2020-12-01 15:54:28,865 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 10 [2020-12-01 15:54:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:28,865 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2020-12-01 15:54:28,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:54:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2020-12-01 15:54:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:54:28,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:28,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:29,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:54:29,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:29,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash 131116369, now seen corresponding path program 1 times [2020-12-01 15:54:29,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:54:29,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141372556] [2020-12-01 15:54:29,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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 [2020-12-01 15:54:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:29,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:54:29,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:54:31,054 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-12-01 15:54:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:32,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:54:37,348 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 [2020-12-01 15:54:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:37,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141372556] [2020-12-01 15:54:37,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:37,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-01 15:54:37,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899243760] [2020-12-01 15:54:37,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:54:37,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:54:37,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:54:37,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2020-12-01 15:54:37,656 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand 11 states. [2020-12-01 15:54:40,116 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 [2020-12-01 15:54:43,484 WARN L197 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-12-01 15:54:46,402 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-12-01 15:54:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:47,082 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-01 15:54:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:54:47,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-12-01 15:54:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:47,084 INFO L225 Difference]: With dead ends: 44 [2020-12-01 15:54:47,084 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:54:47,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=41, Invalid=97, Unknown=2, NotChecked=42, Total=182 [2020-12-01 15:54:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:54:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-01 15:54:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:54:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2020-12-01 15:54:47,092 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 12 [2020-12-01 15:54:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:47,093 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-12-01 15:54:47,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:54:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-12-01 15:54:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:54:47,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:54:47,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:54:47,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:54:47,295 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:54:47,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:54:47,296 INFO L82 PathProgramCache]: Analyzing trace with hash -302456811, now seen corresponding path program 1 times [2020-12-01 15:54:47,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:54:47,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385979659] [2020-12-01 15:54:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/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 [2020-12-01 15:54:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:54:47,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:54:47,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:54:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:47,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:54:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:54:47,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385979659] [2020-12-01 15:54:47,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:54:47,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 6 [2020-12-01 15:54:47,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374140554] [2020-12-01 15:54:47,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:54:47,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:54:47,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:54:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:54:47,608 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 6 states. [2020-12-01 15:54:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:54:47,662 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-12-01 15:54:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:54:47,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-01 15:54:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:54:47,663 INFO L225 Difference]: With dead ends: 39 [2020-12-01 15:54:47,663 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:54:47,664 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 [2020-12-01 15:54:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:54:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:54:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:54:47,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:54:47,665 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-12-01 15:54:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:54:47,665 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:54:47,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:54:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:54:47,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:54:47,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:54:47,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:54:48,791 WARN L197 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-01 15:54:53,812 WARN L197 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2020-12-01 15:54:53,814 INFO L262 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-12-01 15:54:53,815 INFO L262 CegarLoopResult]: For program point L60-1(lines 60 65) no Hoare annotation was computed. [2020-12-01 15:54:53,815 INFO L262 CegarLoopResult]: For program point L27-1(lines 19 107) no Hoare annotation was computed. [2020-12-01 15:54:53,815 INFO L262 CegarLoopResult]: For program point L27-2(lines 27 31) no Hoare annotation was computed. [2020-12-01 15:54:53,815 INFO L258 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|)) [2020-12-01 15:54:53,816 INFO L262 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-12-01 15:54:53,816 INFO L262 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-12-01 15:54:53,816 INFO L258 CegarLoopResult]: At program point L69-2(lines 67 76) the Hoare annotation is: false [2020-12-01 15:54:53,816 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 15:54:53,816 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-12-01 15:54:53,816 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:54:53,817 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:54:53,817 INFO L262 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-12-01 15:54:53,817 INFO L262 CegarLoopResult]: For program point L78-2(lines 19 107) no Hoare annotation was computed. [2020-12-01 15:54:53,817 INFO L262 CegarLoopResult]: For program point L54-1(lines 19 107) no Hoare annotation was computed. [2020-12-01 15:54:53,817 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-12-01 15:54:53,817 INFO L265 CegarLoopResult]: At program point L129(lines 112 130) the Hoare annotation is: true [2020-12-01 15:54:53,818 INFO L262 CegarLoopResult]: For program point L88(lines 88 105) no Hoare annotation was computed. [2020-12-01 15:54:53,818 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-12-01 15:54:53,818 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start_fmod_float_~y (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2020-12-01 15:54:53,818 INFO L262 CegarLoopResult]: For program point L72(lines 72 73) no Hoare annotation was computed. [2020-12-01 15:54:53,818 INFO L262 CegarLoopResult]: For program point L48(lines 19 107) no Hoare annotation was computed. [2020-12-01 15:54:53,818 INFO L258 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|)) [2020-12-01 15:54:53,819 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-01 15:54:53,819 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:54:53,819 INFO L262 CegarLoopResult]: For program point L90-1(lines 90 94) no Hoare annotation was computed. [2020-12-01 15:54:53,819 INFO L258 CegarLoopResult]: At program point L90-2(lines 90 94) the Hoare annotation is: false [2020-12-01 15:54:53,819 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:54:53,819 INFO L262 CegarLoopResult]: For program point L49-2(lines 49 50) no Hoare annotation was computed. [2020-12-01 15:54:53,820 INFO L258 CegarLoopResult]: At program point L49-3(lines 49 50) the Hoare annotation is: false [2020-12-01 15:54:53,820 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2020-12-01 15:54:53,820 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2020-12-01 15:54:53,820 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:54:53,820 INFO L262 CegarLoopResult]: For program point L99-3(lines 99 103) no Hoare annotation was computed. [2020-12-01 15:54:53,820 INFO L262 CegarLoopResult]: For program point L124(lines 124 127) no Hoare annotation was computed. [2020-12-01 15:54:53,821 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-12-01 15:54:53,821 INFO L262 CegarLoopResult]: For program point L42-1(lines 19 107) no Hoare annotation was computed. [2020-12-01 15:54:53,821 INFO L262 CegarLoopResult]: For program point L67-1(lines 67 76) no Hoare annotation was computed. [2020-12-01 15:54:53,821 INFO L262 CegarLoopResult]: For program point L67-3(lines 67 76) no Hoare annotation was computed. [2020-12-01 15:54:53,821 INFO L258 CegarLoopResult]: At program point L84-2(lines 84 87) the Hoare annotation is: false [2020-12-01 15:54:53,821 INFO L262 CegarLoopResult]: For program point L84-3(lines 19 107) no Hoare annotation was computed. [2020-12-01 15:54:53,822 INFO L262 CegarLoopResult]: For program point L43-2(lines 43 44) no Hoare annotation was computed. [2020-12-01 15:54:53,822 INFO L258 CegarLoopResult]: At program point L43-3(lines 43 44) the Hoare annotation is: false [2020-12-01 15:54:53,834 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,835 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,835 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,835 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,836 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,837 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,837 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,837 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,837 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,838 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,839 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,839 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:54:53,839 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,840 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:54:53,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:54:53 BoogieIcfgContainer [2020-12-01 15:54:53,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:54:53,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:54:53,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:54:53,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:54:53,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:54:28" (3/4) ... [2020-12-01 15:54:53,846 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:54:53,857 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-01 15:54:53,857 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 15:54:53,858 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:53,858 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:54:53,889 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e9f1c980-e386-4b9d-a40c-afb33a915387/bin/uautomizer/witness.graphml [2020-12-01 15:54:53,889 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:54:53,890 INFO L168 Benchmark]: Toolchain (without parser) took 29195.18 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 47.4 MB in the beginning and 51.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,891 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory was 64.4 MB in the beginning and 64.4 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:54:53,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 81.8 MB. Free memory was 47.2 MB in the beginning and 64.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,892 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.84 ms. Allocated memory is still 81.8 MB. Free memory was 64.2 MB in the beginning and 62.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,893 INFO L168 Benchmark]: Boogie Preprocessor took 41.11 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 60.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,893 INFO L168 Benchmark]: RCFGBuilder took 2974.22 ms. Allocated memory is still 81.8 MB. Free memory was 60.3 MB in the beginning and 64.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,894 INFO L168 Benchmark]: TraceAbstraction took 25740.02 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 64.1 MB in the beginning and 54.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,895 INFO L168 Benchmark]: Witness Printer took 47.15 ms. Allocated memory is still 98.6 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:54:53,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory was 64.4 MB in the beginning and 64.4 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.61 ms. Allocated memory is still 81.8 MB. Free memory was 47.2 MB in the beginning and 64.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.84 ms. Allocated memory is still 81.8 MB. Free memory was 64.2 MB in the beginning and 62.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.11 ms. Allocated memory is still 81.8 MB. Free memory was 62.4 MB in the beginning and 60.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2974.22 ms. Allocated memory is still 81.8 MB. Free memory was 60.3 MB in the beginning and 64.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25740.02 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 64.1 MB in the beginning and 54.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * Witness Printer took 47.15 ms. Allocated memory is still 98.6 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation 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 [2020-12-01 15:54:53,909 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,909 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,910 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,910 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,910 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,910 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,911 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,911 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_float_~x,QUANTIFIED] [2020-12-01 15:54:53,911 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,911 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 [2020-12-01 15:54:53,912 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,912 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-12-01 15:54:53,912 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-12-01 15:54:53,913 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: 19.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 6 SDslu, 263 SDs, 0 SdLazy, 28 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 15.4s 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, 5.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.4s 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...